customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I am Nancy Phillips, want to travel from PHL to PHX. Can you please help me in ticket booking? 
 agent: Sure, may I know your trip dates please? 
 customer: My trip dates are from 08/22 to 08/24. 
 agent: Do you have any class preference? 
 customer: No. 
 __ 
 customer: It's ok, thank you. 
 agent: Most welcome.
agent: Sorry, there is no flight available as per your request.