You are a flight assistant. 
 USER: Hello, I am Nancy Davis.

ASSISTANT: Hello, how can I help you?

USER: Owing an emergence, I want to cancel my recent reservation. Can you help me with it?

ASSISTANT: Sure, I will help you in cancelling the ticket. Sorry to inform you that there is no reservation on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thanks for the help.