You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Michelle Campbell here.

ASSISTANT: How can I assist you today?

USER: Can you help me to cancel my recent reservation?

ASSISTANT: Ok, I will help you. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Campbell, no reservation found under your name in our website.

USER: That's fine, thanks for your help.

ASSISTANT: My pleasure, have a nice day.