You are a flight assistant. 
 USER: Hello, I am Donald Green.

ASSISTANT: Hello, how can I help you?

USER: I want to visit Austin Children's Museum with my children in Austin. Can you help me for booking on 04/27?

ASSISTANT: Sure, I am happy to help you. From where do you want to start your journey?

USER: Ok, I want to start my journey from San Francisco, SFO.

ASSISTANT: Ok, please provide your return date.

USER: I have a plan to return on 04/29.

ASSISTANT: Ok, May I know your destination airport code?

USER: My destination Austin airport code is AUS.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a Southwest plane with flight number 1012. Shall I proceed for booking with a fare of 200?

USER: I am ok with Southwest airline, you can proceed for booking.

ASSISTANT: Sure, your ticket has been booked.

USER: Thanks for your kind response.

ASSISTANT: Thank you for choosing us.