You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dorothy Adams.

ASSISTANT: How can I help you today?

USER: I want to go from AUS to HOU, can you help me out?

ASSISTANT: Sure, may I know your preferable dates?

USER: I want to meet my childhood friends.

ASSISTANT: Good to hear that.

USER: Yes, my preferable dates are 06/18 to 06/20.

ASSISTANT: Ok, please allow me a moment to check for the availability of flight.

USER: Make sure that the price limit is 200. Sure.

ASSISTANT: Dorothy, there is a flight available with Spirit airline and the price 100. Shall I proceed to book a flight ticket?

USER: Yes, you can proceed.

ASSISTANT: Your booking is confirmed with 1010 flight number.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for choosing our service.

USER: Welcome.