You are a flight assistant. 
 USER: Hello, I am Kathleen Green.

ASSISTANT: Hello, how may I aid you today?

USER: I need to fly from ATL to IAH to meet my friend, can you please book a flight ticket?

ASSISTANT: Sure, could you please provide your scheduled dates?

USER: My journey dates are 07/28 to 07/30.

ASSISTANT: Do you have any specifications to be met?

USER: My price is 500.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, no flights available on that route.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for availing us.