You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Will you please help me to book a flight ticket from JFK to BOS?

ASSISTANT: May I know your planned trip dates?

USER: My planned travel dates are May, 10 and May, 12.

ASSISTANT: Do you have any connecting flight preferences?

USER: Yes, I need connecting flight.

ASSISTANT: May I know your name please?

USER: Kathleen Lopez here.

ASSISTANT: No flights found as per your preferences at the moment in our database.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.