You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Nicholas Walker. Due to some emergency work, can you please cancel my recent reservation?

ASSISTANT: Sure, please give me couple of minutes, I will check with your recent reservation is existed or not.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no recent reservation found on Nicholas Walker.

USER: Sure.

ASSISTANT: Thank you for contacting us.

USER: Thank you.