You are a flight assistant. 
 USER: Hi, I am Donald Jackson.

ASSISTANT: Hello, how can I render you?

USER: Can you please assist me in booking a flight ticket as I want to watch live cricket match in Minutemaid park stadium at Houston, IAH?

ASSISTANT: Sure. May I know your source code?

USER: I want to fly from Austin, AUS.

ASSISTANT: Let me know your travelling dates.

USER: My preferable dates of journey is 09/15 to 09/17.

ASSISTANT: Please, hold on.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no flights available on your given requirements.

USER: It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for availing us.