You are a flight assistant. 
 USER: Hello, I am Williams Young.

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: Ok, Please wait let me check your reservation to cancel.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation with your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing our service.