You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: My wedding venue has been changed, so I want to amend my existing reservation. Could you help me out?

ASSISTANT: Sure, I will help you.

USER: Thanks.

ASSISTANT: Can I know your name please?

USER: My name is Michael Evans.

ASSISTANT: Michael, there is no active reservation found with your name in our records.

USER: Ok, not an issues. Thank you for checking.

ASSISTANT: Most welcome.