You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Kathleen Harris.

ASSISTANT: How can I help you today?

USER: I want to visit to houston HOU for my collage project, can you help me?

ASSISTANT: Sure, I will help you may I know your source code?

USER: My source code is AUS.

ASSISTANT: When you are going to start your journey?

USER: My dates will be from 12/26 to 12/28.

ASSISTANT: Ok, wait for a moment please.

USER: Ok, please check for the flights within 200 only.

ASSISTANT: Sorry to say this Harris, no flights as per your details.

USER: Ok, no issues.Thank you for checking.

ASSISTANT: My pleasure, have a nice day.

USER: Welcome.