You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I best support you?

USER: I am Donna Lewis, I want to cancel my recent reservation due to sudden change in my schedule.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

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

USER: Ok, not an issue.

ASSISTANT: Thanks for connecting with us.

USER: Thank you for your help.

ASSISTANT: Have a nice day.