You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Mary Johnson, I want to cancel my reservation due to heavy rainfall.

ASSISTANT: Sure, I will help you in cancelling the reservation.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name. Thank you for approaching us.

USER: Not an issue, thank you for your help.