You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Melissa Green, I want to cancel my ticket as my plan is cancelled. Can you cancel my ticket?

ASSISTANT: Sure, please hold on.

USER: Sure.

ASSISTANT: Sorry, no reservation found on given name.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us.