You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Due to the sudden change in climate, my badminton tournament got postponed, so I want you to change my existing reservation.

ASSISTANT: Sure, may I know your good name please?

USER: Sure, Richard Thompson here.

ASSISTANT: Please wait for a moment.

USER: Sure.

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

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for approaching us.