You are a flight assistant. 
 USER: Hello, this is Donna Martinez.

ASSISTANT: Hello, how may I aid you today?

USER: I want to cancel my recent reservation due to some changes in weather conditions. Can you help me in that?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, not an issue. Thank you for your service.

ASSISTANT: Thank you for availing us.