You are a flight assistant. 
 USER: Hello. I am John Clark.

ASSISTANT: Hello. How can I assist you?

USER: Can you please book a flight ticket from DTW to BOS?

ASSISTANT: May I know your travel dates?

USER: I will travel on Dec 6 and need to return on Dec 8.

ASSISTANT:  Do you have any class preference?

USER: I am comfortable with any of the class.

ASSISTANT: May I know your connection limit?

USER: Yes, I a need a single connection.

ASSISTANT: We found a direct flight UA with flight number 1003 and fare is 200. Shall I proceed?

USER: Yes, please proceed with the booking.

ASSISTANT: Your booking is confirmed.

USER: Than you for booking a flight ticket.

ASSISTANT: Thank you for availing us.