You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you for the day?

USER: I would like to cancel my reservation which was made on the name Sandra Lopez. Can you help me with it?

ASSISTANT: Sure, I am here to help you. Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.