You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: Christine Turner here.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

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

USER: Ok, thank you.

ASSISTANT: Thank you for contacting us.