You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me booking a flight ticket from SFO to DTW?

ASSISTANT: Sure, May I know your trip dates?

USER: I will start on 12/22 and return on 12/24.

ASSISTANT: Do you need any lay by in your journey?

USER: I need a break in my journey.

ASSISTANT: May I know your airline preference?

USER: I am comfertable with any flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: There is a connecting flight with fare of 100 and 1029 flight number. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: To confirm the booking, may I know your name please?

USER: I am Jack Lee.

ASSISTANT: Your seat has been reserved with Spirit airlines in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe journey.