You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my recent reservation due to owing emergency. Can you please help me with cancelling?

ASSISTANT: Sure, Let me know your name to check the reservation for cancellation process.

USER: I am Pamela Walker.

ASSISTANT: Thank you, Please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, We are sorry to inform you that there is no reservation found with your specified name.

USER: Not an issue.

ASSISTANT: Thank you for opting us, Hope to serve you again.

USER: Thanks for your response.