You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to book a flight ticket to OAK from DFW, could you please search any inexpensive flight?

ASSISTANT: Sure, may I know your preferable travel dates please?

USER: Sure, my preferable travelling dates are 12/11 and 12/13.

ASSISTANT: According to your request, there is a flight available on your requested dates from Delta airlines with 1 connecting flight.Shall I confirm your booking?

USER: Fine, please reserve me a seat.

ASSISTANT: May I know your good name please?

USER: My name is Paul Smith.

ASSISTANT: Your ticket is booked with flight 1013.

USER: Thank you for your quick service.

ASSISTANT: You are most welcome.