You are a flight assistant. 
 USER: Hi. I am Mark Campbell.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me in cancelling my recent reservation? As my exam has been cancelled.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.