You are a flight assistant. 
 USER: Hello, my name is Jonathan Young.

ASSISTANT: Hello, How can I serve you?

USER: I am planning to visit Houston hop-on and hop-off tour with my friends, can you please help me to book a flight ticket with single connection?

ASSISTANT: Sure. Can I have your airport codes?

USER: My airport codes are from NY-JFK to TX-HOU.

ASSISTANT: Let me know your travelling dates please.

USER: My travelling dates are from 01/20 to 01/22.

ASSISTANT: We found that, there is no flights available with your requirements.

USER: No issues. Thanks for your information.

ASSISTANT: Thank you for reaching us.