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

ASSISTANT: Hello, how can I help you?

USER: As my meeting has been postponed, Can you please change my reservation?

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry to say you that there is no reservation with your name.

USER: No problem. Thank you.

ASSISTANT: Thank you for reaching us.