You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Catherine Phillips. I am planning to visit Zilker park in Austin with my friends, could you help me to make a reservation?

ASSISTANT: Sure, we are euphoric to help you.

USER: Thank you.

ASSISTANT: Can you please let me know your journey dates?

USER: I am planning to depart on 09/04 and return on 09/06.

ASSISTANT: May I know your boarding and landing points?

USER: I want to board at Detroit, DTW and land at Austin, AUS.

ASSISTANT: How much you can spend for airfare?

USER: I can spend up to 200.

ASSISTANT: Thank you for sharing your details, please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry to notify that, we did not find any flights matching your credentials.

USER: Ok, not a problem. Thank you for your response.

ASSISTANT: Thank you for choosing us. Have a good day.