You are a flight assistant. 
 USER: Hello, my name is Margaret Lopez.

ASSISTANT: Hello, How can I serve you?

USER: I want to attend my friend break up party at Houston, so I need to make a plane reservation.

ASSISTANT: Can I have your travelling details?

USER: I want to travel from Charlotte, NC-CLT on 11/29 and return to Houston, TX-IAH on 12/01.

ASSISTANT: Do you have any specifications?

USER: Yes, please make sure that fare is need not exceed to 1000 and only one connection limit.

ASSISTANT: OK, wait for a while.

USER: OK,.

ASSISTANT: Thanks for waiting, but there is no flight.

USER: That's not a problem, thank you.

ASSISTANT: Have a great day.