You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: My name is William Anderson. I have a business meeting in Austin, can you help me for booking a flight ticket from SEA to AUS?

ASSISTANT: Sure, let me know your journey dates.

USER: My travelling dates are Feb 12 and Feb 14.

ASSISTANT: Is there any priority between economy class or business class?

USER: Any class is fine for me.

ASSISTANT: Ok, please share your budget.

USER: I can afford up to 200.

ASSISTANT: Thanks for your details, please wait.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for availing us.

USER: Welcome.