You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to search a flight with 0 connection limit?

ASSISTANT: Ok, may I know your travelling dates?

USER: The travelling dates are 03/24 to 03/26.

ASSISTANT: May I know your trip codes?

USER: The airport codes are from TX-IAH to TX-HOU.

ASSISTANT: Can you please let me know your name?

USER: Sure, my name is Jack Smith.

ASSISTANT: No flight ticket found in your route.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.