You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to book a flight on Sept 1st to meet my friend. Can you book a flight for me?

ASSISTANT: Sure, may I know your airport codes?

USER: My source point is DEN and my destination is ORD.

ASSISTANT: May I know your return date.

USER: I will return on Sept 3rd.

ASSISTANT: May I know your connection limit.

USER: I prefer a connecting flight.

ASSISTANT: Any other specifications needed?

USER: No.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with one connecting flight and the price is 100 in Delta Airlines, can I proceed with the reservation?

USER: Please proceed with booking.

ASSISTANT:  On which name shall I reserve flight ticket?

USER: Book flight ticket on name of Rachel Hall.

ASSISTANT: Your ticket has been reserved with the flight number 1000.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching our service.