You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I would like to meet my brother at New York, can you please book my flight ticket from LAX to EWR?

ASSISTANT: May I know your trip dates.

USER: I would like to depart on Feb 15th and return back on Feb 17th.

ASSISTANT: Is there any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Gary Lopez.

ASSISTANT: We regret to inform that there is no flight found with your required dates to travel.

USER: Sad to hear that. Anyway, thank you for checking.

ASSISTANT: Thank you for opting us.