You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need to cancel my recent reservation due to some health issues, can you help me?

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

USER: Thank you. Patricia Walker here.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry to inform you that, we did not find any reservation against your name.

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

ASSISTANT: Thank you for choosing us.