You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Stephanie Carter. Please help me in changing my recent reservation.

ASSISTANT: Sure, please be on hold.

USER: Sure.

ASSISTANT: Sorry, no reservation found in your name to change.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.