You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I planned meet my friend in ATL, can you please help me to book a flight ticket from EWR?

ASSISTANT: Sure, may I know your preferred dates of travel?

USER: I prefer to travel on Feb 4 and Feb 6.

ASSISTANT: Do you have any connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Is there any other specifications?

USER: I would like to return back in evening.

ASSISTANT: May I know your name?

USER: I am Robert Brown.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry to say that there were no flights found on your preferred dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.