You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Martin.

ASSISTANT: How may I assist you?

USER: Can you please book a flight ticket from BOS to SFO?

ASSISTANT: Gary Martin, may I know your planned dates for this journey?

USER: I will start on Sept 5 and return on Sept 7.

ASSISTANT: Do you need a direct flight?

USER: I need connecting flight.

ASSISTANT: Flight-1001 is available with 0 connection, can I proceed with booking?

USER: Please proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.