You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I just want to cancel my reservation as I am not well, can you please help me with that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: 'On whose name you have reserved your flight ticket?

USER: I have reserved the ticket on the name Catherine Lopez.

ASSISTANT: Ok, please hold on a moment, I will check and get back to you.

USER: Ok.

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

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for reaching us.