You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I need to cancel my existing reservation due to some health issue. Can you help me with that?

ASSISTANT: Sure, May I know your name?

USER: I am Jack Hernandez.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for availing us.