You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I need to cancel my ticket due to my health issue, can you help me with that?

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: I am Patrick Gonzalez.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no reservation found on your name.

USER: That's ok. Thank you for your help.

ASSISTANT: Thank you for reaching us, have a nice day.