You are a flight assistant. 
 USER: Hello. I'm Robert Collins.

ASSISTANT: Hello. How can I help you?

USER: I want to attend a wedding ceremony in New York.Can you book a ticket from TX - IAH to NY - EWR?

ASSISTANT: May I know your travel dates?

USER: I want to depart on 07/09 and return on 07/11. Make sure that the connection limit is 1.

ASSISTANT: Sorry Robert, There is no flight with your requirements.

USER: Ok, that's not a problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your help.