You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have a business meeting in Washington. Can you help me for for ticket booking?

ASSISTANT: Sure, I will help you out. May I know your travelling dates please?

USER: My travelling dates are from 07/31 till 08/02.

ASSISTANT: Can I know your airport codes?

USER: My travelling airport codes are from DFW to IAD.

ASSISTANT: May I know your name please?

USER: My name is Debra Mitchell.

ASSISTANT: Please wait a moment. There is a flight with 1 connection and price 100, can I proceed with this flight?

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.