You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Shirley Adams. Can you please reserve me a flight ticket which is having it's depart time in the afternoon?

ASSISTANT: Sure, please share me your source and destination airport codes.

USER: I would like to travel from DEN to ATL.

ASSISTANT: May I know your trip dates?

USER: I have planned to travel on Nov 13th and return on Nov 15th.

ASSISTANT: Is there any class preferences for you?

USER: No.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer connecting flight.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no problem.

ASSISTANT: Thank you for communicating with us.

USER: Thank you.