You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I want to book a flight ticket from Denver DEN to Boston BOS. Can you find a flight ticket for me?

ASSISTANT: Sure, let me know your travel dates?

USER: Ok, my planned trip dates are on Mar 25 and return on Mar 27.

ASSISTANT: Do you have any connection limit?

USER: Ok, I need connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Yes, I am Thomas Hall.

ASSISTANT: We found a connecting flight 1000 in Spirit airline with fare 100 and class is economy. Shall I proceed?

USER: Ok, please proceed with the ticket booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.