answer: #Person2# will make a call and requests #Person1# to keep an eye on #Person1#'s suitcase.
documents: #Person1#: Excuse me. Will you please keep an eye on my suitcase? I just want to make a phone call. 
  #Person2#: Certainly, but will it take long? 
  #Person1#: No, I'll be right back. 
  #Person2#: OK. I'll look after it then.