You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Please help me to book a flight ticket from DEN to JFK.

ASSISTANT: Sure, let me know your trip dates?

USER: I want to fly on 29 Jan and return on 31 Jan.

ASSISTANT: Do you have any connection limit?

USER:  I am willing to travel in a single connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Barbara Jones.

ASSISTANT: We found a American airline with flight number 1000 and class is economy fare of 100. Shall I proceed with booking?

USER: Please proceed to booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.