You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: My name is Raymond Phillips.

ASSISTANT: Nice to meet you.

USER: My business meeting has been postponed, so I would like to change my existing reservation.

ASSISTANT: Sure, please wait for a while.

USER: Ok, I will wait for your reply.

ASSISTANT: Thanks for waiting and sorry Phillips, there is no reservation found with your name in our records.

USER: It's ok, no problem. Thank you for checking.

ASSISTANT: Most welcome.