You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I need to schedule my trip to visit Austin. Can you please help me in reserving the ticket from IAD to AUS?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: I am planning my trip on May 13 and again I will return back on May 15.

ASSISTANT: Do you have any connection limit?

USER: I am flexible with single connection.

ASSISTANT: May I know your class preference?

USER: I am comfort with any class.

ASSISTANT: Do you have any more specifications?

USER: No, I don't have any other requirements.

ASSISTANT: Let me know your name to proceed.

USER: Myself George Campbell.

ASSISTANT: Spirit airlines is providing you the connecting flight in economy class, which departs at  21 PM and arrives at 19 PM. Shall I proceed?

USER: Yes, please go ahead and reserve the ticket.

ASSISTANT: Your ticket has been reserved with flight 1013.

USER: Thank you very much for reserving the ticket.

ASSISTANT: My pleasure.