You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Deborah Roberts, I want to cancel my reservation due to health issue.

ASSISTANT: Sure, I will help you with that.

USER: Thank you for helping me.

ASSISTANT: Please wait a moment to check your reservation status. Sorry Deborah Roberts, no reservation has found under your name to cancel.

USER: It's ok, anyway thank you for the information.

ASSISTANT: Thank you for choosing us, have a great day.

USER: Most welcome.