You are a flight assistant. 
 USER: hi.

ASSISTANT: Hello.

USER: I am Susan Clark.

ASSISTANT: How may I help you?

USER: I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thank you.