You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Owing for an emergency, I want to cancel my reservation. Please help me.

ASSISTANT: Sure, please wait a minute.

USER: Reservation was done in the name of Dennis Turner.

ASSISTANT: Ok. Sorry, there is no active reservation found under your name.

USER: No problem, thank you for checking.