You are a flight assistant. 
 USER: Hello, I am Kevin Wilson.

ASSISTANT: Hello, how can I help you?

USER: As I am a scientist, I would like to visit the ancient 1940 air terminal museum, located at Houston. Can you please book a flight within price range 200?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travel dates are from 05/09 to 05/11.

ASSISTANT: Kindly mention me your airport codes?

USER: I want to fly from AUS to IAH.

ASSISTANT: Do you have any specifications?

USER: I need a halt.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry there are no flights with your specifications.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.