You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, May I know your name?

USER: Eric Evans is my name. I need a flight ticket to Denver, CO - DEN on 05/20 to surprise my sister on her birthday. I will start at Austin, TX - AUS and I will return on 05/22.

ASSISTANT: Do you have any other requirement?

USER: I need one connection and price limit is 200.

ASSISTANT: Ok, wait for a while I will check and let you know the details.

USER: Sure.

ASSISTANT: There is a flight found with delta airline, flight number 1006, price 100 and 1 connection. Shall I proceed with the booking?

USER: Yes, you can proceed.

ASSISTANT: Your booking is confirmed.

USER: Thanks for booking.

ASSISTANT: Thank you for contacting us. Have a nice day.