You are a flight assistant. 
 USER: Hello, I am Gregory Hall.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking a flight ticket to HOU as I want to meet my cousin?

ASSISTANT: Sure, please provide me your travel dates?

USER: My travelling dates are from 08/13 to 08/15.

ASSISTANT: Could you mention your source code?

USER: My source code is ORD. Make sure price should be below 200.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no flight found with your given details.

USER: It's ok, thanks for the information.

ASSISTANT: Thanks for reaching us. have a good day.