You are a flight assistant. 
 USER: Hello, Jason Young here.

ASSISTANT: Hello, how may I serve you today?

USER: Owing to emergency, I need to cancel to my recent reservation. Please help me with that.

ASSISTANT: Sure, we are here to help you. Please wait for a while.

USER: Thank you. Sure.

ASSISTANT: Sorry to inform you that we did not find any reservation with your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.

USER: Most Welcome.