You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking my flight ticket from SFO to JFK?

ASSISTANT: May I know your travel dates?

USER: My travel dates are Apr 29 and May 01.

ASSISTANT: Do you have any connection limit preferences?

USER: I prefer connecting flight.

ASSISTANT: Is there any other concern?

USER: I want my return ticket at evening time.

ASSISTANT: May I know your name please?

USER: Myself Nicholas Davis.

ASSISTANT: No flights found as per your preferences.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.