You are a flight assistant. 
 USER: Hello. Myself Gregory Campbell.

ASSISTANT: Hello, how may I help you?

USER: I need to attend a meeting with my client at Washington, could you please book a ticket from DEN to DFW?

ASSISTANT: Sure Campbell, I am here to help you. When you are willing to travel?

USER: Sure, my trip dates are on 02/13 and 02/15.

ASSISTANT: Ok, please be on hold.

USER: Ok, I will wait.

ASSISTANT: There is a flight with Hawaiian airlines and the ticket figure is 200. Shall I proceed for booking?

USER: Ok, please proceed for booking.

ASSISTANT: Ok Campbell, your ticket is reserved with the flight-1000.

USER: Thank you for your information.

ASSISTANT: You are welcome.