You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Could you please book me a plane ticket from AUS to HOU?

ASSISTANT: Sure, your travel dates please?

USER: I will leave on May 17 and return on May 19.

ASSISTANT: Is there any class preference?

USER: Yes, I would prefer to travel in an economy class.

ASSISTANT: Any other requirement to be met?

USER: Yes, I need a lay by.

ASSISTANT: Can you mention your name to proceed further?

USER: I am Jack Harris.

ASSISTANT: American Airlines has a connecting flight with number 1022 for fare 100, shall I proceed?

USER: Perfect, please proceed.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thanks for your service.

ASSISTANT: Thank you for opting us.