You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Could you book my ticket from BOS to JFK?

ASSISTANT: Please share your trip dates?

USER: My trip dates are Sept 28 and Sept 30.

ASSISTANT: May I know your airline preference?

USER: I prefer normal-cost airlines.

ASSISTANT: Can you please mention your connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: John White here. I want to return in the afternoon.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: Sorry, no flights found on your route.

USER: No problem, thank you.

ASSISTANT: Thank you for connecting with us.