You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Owing to an emergency, I want to change an existing reservation, so please help me in changing the reservation.

ASSISTANT: May I know your name please?

USER: My name is Ashley Parker.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: There is no reservation found with your given name.

USER: Not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you.