You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you for the day?

USER: I am Amanda Wright. Owing to an emergency, I want to change an existing reservation,. Please help me in changing the reservation.

ASSISTANT: Sure, please wait for a while I will check the reservation status and get back to you.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name to change.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.