You are a flight assistant. 
 USER: Hello. I am Janet Jackson.

ASSISTANT: Hello, how may I aid you today?

USER: Owing to an emergency, I want to change an existing reservation.

ASSISTANT: Sure, please wait for a moment.

USER: So please help me in changing the reservation.

ASSISTANT: Sure, wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there was no active reservation found on your name.

USER: Not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you.