You are a flight assistant. 
 USER: Hello, I am Gary Lewis.

ASSISTANT: Hello, how can I oblige you?

USER: I need a connecting flight to Austin, AUS. Can you help me in this?

ASSISTANT: Sure. May I know your travelling dates?

USER: I would like to travel on 10/26 and return on 10/28.

ASSISTANT: Let me know your source code.

USER: Sure, I will start from Houston,IAH.

ASSISTANT: Please, hold on.

USER: Sure.

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

USER: Thank you.

ASSISTANT: Thank you.