You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you change my existing reservation, which I have done 3 months back, to meet my friend.

ASSISTANT: Sure, may I know your name please?

USER: Sure, myself Sharon Wilson.

ASSISTANT: Wilson, there is no reservation with your name to change further.

USER: It's ok, no issues. Thanks for checking.

ASSISTANT: My pleasure.