You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you help me?

ASSISTANT: Sure, your name please.

USER: Richard Turner here.

ASSISTANT: Sorry, there is no reservation under your name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.