You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: My name is Kenneth Brown, I want a business class flight from Washington to Phoenix to attend meeting with share holders.. Can you find a direct fight for me?

ASSISTANT: Sure, please forward your travelling dates?

USER: I will fly on Jan 05 and return on Jan 07.

ASSISTANT: Kindly mention your airport codes?

USER: My source point is DCA and destination airport code is PHX.

ASSISTANT: May I know your budget limit?

USER: My budget is 1000 for flight ticket.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flight found on your desired journey routes.

USER: Thank you for the information.

ASSISTANT: Thank you for choosing us, hope to serve you again.