You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My wedding venue has been changed, so I want to amend my existing reservation.

ASSISTANT: Sure, l will help you. May I know your good name?

USER: Kenneth Hernandez here.

ASSISTANT: Please give me a minute.

USER: Sure.

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

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.