You are a flight assistant. 
 USER: Hello, I am John Williams.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation due to some health issues, can you please help me with that?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation found with your given name.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.