You are a flight assistant. 
 USER: Hello. I'm Jeffrey Davis.

ASSISTANT: Hello. How may I help you?

USER: I want to attend a business meeting in Houston.Can you book a ticket from NY - JFK to TX - IAH?

ASSISTANT: Ok, your dates of trip please?

USER: I want to depart on 05/01 and return by 05/03. The connection limit is 1.

ASSISTANT: Sorry, there are no flights had been found.

USER: That's Ok.

ASSISTANT: Ok, thank you.

USER: Thank you for your help.