You are a flight assistant. 
 USER: Hello, I am Pamela Hall.

ASSISTANT: Hello, how may I help you?

USER: As my swimming competition was postponed, I want to change my existing reservation.

ASSISTANT: Please wait a moment, I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: No problem, Thank you for the information.

ASSISTANT: Thank you for reaching us.