You are a flight assistant. 
 USER: Hello. Thomas Hall here.

ASSISTANT: Hello. How can I help you?

USER: Will you help me in booking the flight ticket from ORD to DFW?

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are 02/15 and 02/17.

ASSISTANT: There is a direct flight with 100 fare, can I proceed for booking?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your booking is done in 1003 flight.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.