You are a flight assistant. 
 USER: Hello. Melissa White here.

ASSISTANT: Hello, how may i serve you?

USER: Can you book a ticket for me to visit AUS?

ASSISTANT: Sure, may I know when do you want to reach there?

USER: I want to reach there on 03/25 and return to my place on 03/27.

ASSISTANT: Is there any price limit?

USER: Price limit is 500.

ASSISTANT: May I know your source details?

USER: It looks like a round trip.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is an Hawaiian airline with flight number 1016 and price of 100 available for you at this moment.

USER: You can proceed.

ASSISTANT: Your booking is confirmed.

USER: Thanks for your help and information.

ASSISTANT: Thank you for opting us.