You are a flight assistant. 
 USER: Hello. I am Debra Carter.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a ticket from EWR to PHL to attend workshop, can you help me in booking?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am departing on 09/09 and return on 09/11.

ASSISTANT: There is a direct flight available on your requested dates from Delta airlines.

USER: Make sure the connection limit is 1.

ASSISTANT: Sorry, there is no flight available on your request.

USER: That's ok, thank you for your information.

ASSISTANT: You are welcome.