You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Dorothy Smith. Please book a flight ticket from Detroit, DTW on 12/29.

ASSISTANT: Sure, I will help you. May I know your boarding point?

USER: I am boarding at DTW.

ASSISTANT: Could you please share your arrival date?

USER: I will be return on 12/31.

ASSISTANT: Kindly, mention your landing airport code.

USER: I am landing at San Francisco, SFO.

ASSISTANT: Thank you for sharing the details, wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: There is a connecting flight of Delta airline available with fare 100 and 1010 number. Shall I reserve it?

USER: Ok, Proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.