You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER:  I am Sharon Roberts want to visit MN-MSP to surprise my mother.

ASSISTANT: OK.

USER: Can you book a ticket on 11/11?

ASSISTANT: Sure, on which date you want to return?

USER: I will return on 11/13.

ASSISTANT: Your boarding point please?

USER: I will depart from DC-IAD.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: A single stop over flight is available in Delta airline with fare of 200. Shall I make it confirm?

USER: OK, you can proceed.

ASSISTANT: Sure, your booking with 1021 flight is confirmed. Thanks for approaching us, have a nice day.

USER:  Thank you for booking.