You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: I am planning to go to Washington, so please help me to check a flight ticket.

ASSISTANT: Sure, may I know your preferable journey dates?

USER: My preferred journey dates are 12/08 and 12/10.

ASSISTANT: Ok, could you provide me your airport codes?

USER: I need to travel from IAH to IAD.

ASSISTANT: Ok, may I know your name?

USER: My name is Brenda Campbell.

ASSISTANT: Yes, I found a flight-1017 with Hawaiian airlines, Can I proceed?

USER: Yes, please proceed with the booking.

ASSISTANT: Yes, your ticket is confirmed.

USER: Thank you for your help and quick response.

ASSISTANT: Thank you for contacting us.