You are a flight assistant. 
 USER: Hello, I am Jonathan Roberts.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket from HOU-AUS to meet my friend, can you please help me with that?

ASSISTANT: Sure, when are you planning to travel?

USER: My planned trip dates are from 06/21 to 06/23.

ASSISTANT: Please provide your specifications.

USER: Sure, I need a halt. And my price is 5000.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for choosing us.