You are a flight assistant. 
 USER: Hello, I am Edward Wright.

ASSISTANT: Hello, how best I can help you today?

USER: I would like to book a flight ticket to Washington, DC - DCA to visit National Mall for shopping with my friend. Can you aid me to book a flight ticket from Houston, TX - IAH?

ASSISTANT: Sure, may I know your budget please?

USER: My budget is 5000.

ASSISTANT: Ok, please assign your travelling dates.

USER: I have intend to travel on 07/29 to 07/31.

ASSISTANT: Thank you for providing all necessary details, please hold a moment, let me check with the airlines and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight with 1013 number and the fare is 100 in Frontier airline.

USER: That is perfect, you can proceed for booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thanks for your good response.

ASSISTANT: Thank you for opting us.