You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Please book flight on my name Donald Willaims.

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Please, share your journey dates.

USER: 03/18 to 03/20.

ASSISTANT: Do you need halt in your journey?

USER: Yes.

ASSISTANT: Kindly, mention your source airport code.

USER: Orlando, MCO.

ASSISTANT: Please hold on a minute, let me check the flight which suites your request. Please, share your destination airport code for further process?

USER: It's Washington, IAD.

ASSISTANT: You have a flight with airline Frontier and flight number is 1002 with a halt and price is 100. Can I reserve your seat?

USER: Ok. You can proceed to book.

ASSISTANT: Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.