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

ASSISTANT:  Hello, how can I best oblige you now?

USER: I need a connecting flight from San Francisco.

ASSISTANT: Ok.

USER: So, can you book a flight with a fare of 500?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: When you will start your journey?

USER: To celebrate the bachelor's party, I have to start on 05/13.

ASSISTANT: Please, share your fare limit.

USER: 500 is the amount.

ASSISTANT: Kindly, mention your destination airport code.

USER: Austin AUS is destination.

ASSISTANT: Please, share your return date.

USER: I supposed to arrive on 05/15.

ASSISTANT:  Please wait for a while, I will search flight for you.

USER: Sure, I will wait.

ASSISTANT: You have a flight with airline Spirit and flight number is 1024 with a halt and price is 100.

USER: You can confirm my seat.

ASSISTANT: Your reservation is done.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us, have a nice day.