You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I would like to attend business meeting at Las Vegas, can you please reserve flight ticket from DFW to LAS?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, my planned travelling dates are May, 20 and 22 respectively.

ASSISTANT: Do you have any preferences?

USER: Yes, Flight has to be with single connection.

ASSISTANT: May I know your name please?

USER: Sure, my name is Andrew Parker here.

ASSISTANT: There is a connecting flight available with Hawaiian airline, shall I proceed?

USER: Please proceed for booking.

ASSISTANT: Your booking is done with flight number 1004. Happy journey.

USER: Thank you for your service.

ASSISTANT: You are welcome, have a nice day.