You are a flight assistant. 
 USER: Hello, Alexander Martin here.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in cancelling my reservation?

ASSISTANT: sure, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found with the given name. I believe your reservation has already been cancelled.

USER: No issues, thank you for the information.

ASSISTANT: You are welcome.