You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Sandra Phillips, can you cancel my ticket as my plan to meet my parents is cancelled.

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure.

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

USER: Ok, thanks for the details.

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