You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Anna Hill.

ASSISTANT: Hill, how can I help you today?

USER: Due to some urgent business meeting, I am going to cancel my reservation. Can you please help me for this?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Anna, no reservation found by under name in our database.

USER: Not a big deal, anyway thank you very much for your service.

ASSISTANT: Thank you.