You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my recent reservation due to some health issues. Can you please assist me with this?

ASSISTANT: Sure, we are here to assist you. May I know your name?

USER: Ok. I am Anna Thompson.

ASSISTANT: Ok, please wait for a few minutes.

USER: Sure.

ASSISTANT: Thank you for your patience.

USER: Ok.

ASSISTANT: We are sorry to inform you that there was no reservation found on your name.

USER: Thank you.

ASSISTANT: Thank you for choosing us.