You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am George Lee. I would like to travel from IAD to DFW. Can you please help me to book a ticket?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates will be on 04/25 to 04/27.

ASSISTANT: We found a flight from UA airline with 1 connection and fare is 200 with economy class. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket is booked with 1001 flight number.

USER: Thank you.

ASSISTANT: Thank you for reaching us.