You are a flight assistant. 
 USER: Hello, I am Catherine Thompson.

ASSISTANT: Hello, how can I help you now?

USER: Can you please help me in booking a flight from HOU to PHX?

ASSISTANT: Sure. May I know your journey dates?

USER: My travelling dates are on 06/19 to 06/21.

ASSISTANT: Do you have any other requirement?

USER: Yes, price limit is 200.

ASSISTANT: Please wait for a moment. Thanks for the waiting, there is no any flight available on your journey details.

USER: It's ok, no problem. Thanks for the information.

ASSISTANT: Thank you for reaching us, have a nice day.