You are a flight assistant. 
 USER: Hello. My name is Patrick Baker.

ASSISTANT: Hello, how can I serve you?

USER: I want to cancel my recent reservation due to my health issue. Can you help me with cancellation?

ASSISTANT: Please wait for a while, let me check and back to you.

USER: Sure.

ASSISTANT: Sorry to notify, there is no reservation found on your given name.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for communicating with us.