You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I need to schedule my trip to travel Denver. Can you please help me in reserving the ticket from IAD to DEN?

ASSISTANT: Sure, can you share your trip dates?

USER: I am planning my trip on Dec 15 and again I will return back on Dec 17.

ASSISTANT: Do you have any connection limit?

USER: I want to travel in single connection flight.

ASSISTANT: Is there any class preference?

USER: No, I don't have any class preference.

ASSISTANT: Are there any other specifications?

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

ASSISTANT: Please forward your name.

USER: Myself Linda Thompson.

ASSISTANT: We found a connecting flight of fare 100 with airline Delta and number 1021. Can I book?

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

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you very much for reserving the ticket.

ASSISTANT: Thank you.