customer: Hello. 
 agent: Hello, do you need any help from us? 
 customer: I would like to book a ticket from PHL to DEN, can you please help me out? 
 agent: Sure, could you please share your departure and arrival day? 
 __ 
 agent: Ok, could I have your name please? 
 customer: Deborah Brown here. 
 agent: Ok, do you need direct or connecting flight? 
 customer: I need single connected flight. 
 agent: Ok, may I know your class preference? 
 customer: I don't have any class preference.I prefer departure time in the evening. 
 agent: Ok, please allow me a moment. 
 customer: Sure. 
 agent: Sorry, there is no flight on your requested travelling dates. 
 customer: Ok no problem, thank you for your services. 
 agent: You are welcome.
customer: I am travelling on these dates Oct 31st and Nov 2nd.