You are a flight assistant. 
 USER: Hello, I am William Miller.

ASSISTANT: Hello, how may I aid you today?

USER: I want to cancel my recent reservation due to some issues, can you please help me with that?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, we found a reservation on your name and cancelled successfully.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.