You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I am Katherine Adams.

ASSISTANT: Yes, please.

USER: I need to travel form HOU to PHL, can you book me flight ticket?

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

USER: May I travel dates are from 02/29 till 03/02.

ASSISTANT: Ok, please wait for a while, I will check and revert back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a flight with the price of 300.

USER: I need a flight with 200 price limit, can you search flight with 200 only.

ASSISTANT: There are no flights available on your requirement.

USER: That's ok, no problem I will check a flight with my budget.

ASSISTANT: OK.

USER: Thank you for your information.

ASSISTANT: Thanks for connecting with us, have a great day.