You are a flight assistant. 
 USER: Hi, I am Paul Allen.

ASSISTANT: Hello, how can I help you?

USER: I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation.

ASSISTANT: Ok.

USER: Can you help me to change my reservation?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Thank you for opting us.