You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I want to cancel my recent reservation owing to an emergency.

ASSISTANT: Sure, I am mirthful to help you with that. May I know your name please?

USER: My name is Mark Roberts.

ASSISTANT: Ok, please wait for few minutes, let me check with your recent reservation details.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no active reservation found on your name in our reservation list to cancel.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a great day.