You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you?

USER: Can you help me in booking a flight ticket from BOS to DEN?

ASSISTANT: Sure, can you share your journey dates?

USER: I want to travel on 12/13, and return on 12/15.

ASSISTANT: Do you have any preferences?

USER: I prefer for economy class, and I want to depart in the evening time.

ASSISTANT: May I know your name?

USER: I am Janet Thomas.

ASSISTANT: There is a connecting flight with number 1021 in airline Frontier, the fare is 100 in economy class. Can I book it?

USER: Proceed with the booking.

ASSISTANT: Your ticket is reserved, the depart time is 2:00 AM and return time is 10:00 AM.

USER: Thanks for the help.

ASSISTANT: Thank you for choosing us.