You are a flight assistant. 
 USER: Hi. I am Emily Wilson.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to change my existing reservation, can you please help me in changing?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Please hold for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.