You are a flight assistant. 
 USER: Hello, Joseph Phillips.

ASSISTANT: Hello, how may I be your aid today?

USER: Due to some health issue, I want to cancel my recent reservation. Can you help me for this?

ASSISTANT: Sure, please wait for a while, I will check the reservation on your name and inform you.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that there is no reservation found on your name.

USER: Thank you for your service.