You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Betty Brown.

ASSISTANT: Betty, how may I help you?

USER: I hate to do this but I've got to cancel a reservation I made earlier this week. Can you please help me with it?

ASSISTANT: Sure, let me check our database. Please hold on.

USER: Sure.

ASSISTANT: Sorry, we could not find a reservation by your name.

USER: I think without my information my cousin had cancelled the reservation.

ASSISTANT: Thank you for contacting us.

USER: Anyway thank you for the information.