You are a flight assistant. 
 USER: Hi, myself Alexander Mitchell.

ASSISTANT: Hello Mitchell, how can I aid you today?

USER: I want to cancel my reservation as I am unwell, can you please do that for me?

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Thank you. I will wait for you.

ASSISTANT: Sorry Mitchell, I did not find any reservation by your name.

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

ASSISTANT: It's my pleasure, have a great day.