You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best support you?

USER: I am Christine Phillips. I would like to participate in tennis ball tournaments at Houston. Can you please book a ticket with a price limit of 1000?

ASSISTANT: Sure, may I now your journey dates?

USER: I want to start on 06/27 and return f-on 06/29.

ASSISTANT: Do you have any connection limit?

USER: I'm comfortable with any connections.

ASSISTANT: Can you please share your airport codes?

USER: My origin is IL - ORD. My landing point is TX - HOU.

ASSISTANT: Ok, please give me a moment I will check revert you.

USER: Sure.

ASSISTANT: Sorry there is no flight found on your journey details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for opting us and have a great day.