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

ASSISTANT: Hello, Jeffrey. How can I help you today?

USER: I want to go on a vacation to Boston.can you book a ticket from NY - EWR to MA - BOS?

ASSISTANT: Sure.

USER: The departure is on 09/10 and return is on 09/12.

ASSISTANT: Ok.

USER: The connection limit is 0.

ASSISTANT: Jeffrey, please wait a while.

USER: Ok.

ASSISTANT: Sorry to say that there is no flight available as per your requirements.

USER: Ok. Thank you for your help.

ASSISTANT: Thank you for contacting us.