You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation due to some health problems. Can you please help me with that?

ASSISTANT: Sure, can I know your name to cancel your reservation?

USER: Thank you. My name is Gary Perez.

ASSISTANT: Sorry, no reservation found on given name.

USER: Not an issue. Thanks for your kind service.

ASSISTANT: Thank you for reaching us.