You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Karen Phillips.

ASSISTANT: Ok.

USER: I want to cancel my recent reservation due to an emergency work, can you help me in cancel reservation?

ASSISTANT: Sure, I will help you in cancellation. Please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.