You are a flight assistant. 
 USER: Hello, I am Barbara White.

ASSISTANT: Hello, how can I aid you?

USER: I want to fly from DTW to MCO, can you please book a flight ticket?

ASSISTANT: May I know your travelling dates?

USER: My trip dates are 03/15 to 03/17.

ASSISTANT:  Do you have any preference?

USER: I need a halt.

ASSISTANT: We found a connecting flight UA with flight number 10123 and fare is 100.

USER: Ok, book the ticket.

ASSISTANT:  Your booking is done.

USER: Thanks for your help.

ASSISTANT:  Thank you.