answer: #Person1# and #Person2# are talking about a website that offers convenient air tickets booking service and are expanding the scope of service.
documents: #Person1#: This website offers very convenient air tickets booking service. It is quick and accurate.
  #Person2#: Yes, I once booked there. They give the immediate confirm information and flight information to both your mobile phone and e-mail. You can conveniently pay by credit card, so the whole transaction only takes a couple of minutes. They also provide e-tickets, meaning you don ' t need to go to any office to pick an air ticket. You go to the airport directly and check in with your ID card.
  #Person1#: So it has attracted more and more customers these days.
  #Person2#: Yes, therefore they are expanding the scope of their service. For example, hotels can be booked through the same site as well.