You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I am George Allen. Will you book a ticket to Austin, AUS?

ASSISTANT: Sure, could you please mention your trip dates?

USER: Sure. I would like to travel on 05/16 and I will return on 05/18.

ASSISTANT: Ok, provide me with your source code.

USER: Charlotte, CLT is my source point to attend the sports festival.

ASSISTANT: Ok, do you have any other requirements?

USER: I need a connecting flight. Price limit is 1000.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry to say that, no flight were found on your required location.

USER: Ok. Thanks for sharing the information.

ASSISTANT: Thank you for opting us.