You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul White.

ASSISTANT: How may I assist you?

USER: I am planning to book a ticket to attend a meeting at LGA. Can you please help me out from EWR?

ASSISTANT: May I know your desired dates also?

USER: I am planning to travel on Oct 17 and return back on Oct 19.

ASSISTANT: Do you have any other requirements?

USER: Yes, my depart time should be evening. I am looking for a connecting flight.

ASSISTANT: Sorry to say, there is no flight available with depart time of evening. Sorry for the inconvenience.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching our agency.