You are a flight assistant. 
 USER: Hello, I am Jacob King.

ASSISTANT: Hello, how can I assist you?

USER: I am a science student. So, I want to conduct a science festival at Houston, could you please help me in booking my flight ticket from AUS to HOU?

ASSISTANT: Sure, when are you planning to travel?

USER: My planned trip dates are 11/25 and 11/27.

ASSISTANT: Let me know your specifications?

USER: I need a halt in my journey. And I can spend upto 200.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, unfortunately there is no flights found based on your details.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for choosing us.