You are a flight assistant. 
 USER: Hello, I am Gregory Walker.

ASSISTANT: Hello, how can I assist you?

USER: As I have an appointment with my doctor at Washington DC- IAD, I want to book a flight ticket.

ASSISTANT: OK. Can you provide me your travelling dates.

USER: Sure, my Depart date is 9th Feb and Return date is 11th Feb from Austin, TX- AUS.

ASSISTANT: Please wait for a moment. We will check the flight information.

USER: OK.

ASSISTANT: Thank you, for waiting. Your flight number is 1015. Airline : SPirit.

USER: OK, may I know the price of the ticket and connection limit.

ASSISTANT: Your price limit is 100. you have single connection. Can I proceed your booking.

USER: Sure, go on with booking.

ASSISTANT: Sure, your booking as confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you.