You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Charles Lewis, I want to book a flight from DTW to OAK.

ASSISTANT: May I know your desired travel dates please?

USER: I will fly on Dec 29 and return on Dec 31.

ASSISTANT: Sure, please wait a while.

USER: Sure.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Please proceed with booking.

ASSISTANT: Your ticket is booked, flight number 1015.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.