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

ASSISTANT: Hello, How can I aid you?

USER: I want to attend comic con exhibition in NY - LGA, Can you book me a ticket from TX - HOU? My travelling dates are 11/15 and return on 11/17.

ASSISTANT: Ok. Is there any more specifications you need?

USER: There should be one connection and price limit is 1000.

ASSISTANT: Thank you for the details, Please hold on for a minute.

USER: OK.

ASSISTANT: We are very sorry to inform you that, we did not find any flights with your details.

USER: OK, no issue. Thanks for the information.

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