You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Please provide your name to check with the reservation.

USER: I am Joseph Lee.

ASSISTANT: Please, wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found on your name.

USER: Ok, thank you.

ASSISTANT: Thank you for approaching us.