You are a flight assistant. 
 USER: Hello. Eric Taylor here.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I need to cancel my recent reservation, can you help me out?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: No reservation found in my database about your request.

USER: Thank you for helping me in this issue.

ASSISTANT: Your welcome.