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

ASSISTANT: Hello, how can I assist you today?

USER:  I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Can you help me in changing reservation?

ASSISTANT: Sure, we are here to help you to change your reservation.

USER: Thank you.

ASSISTANT: Please wait for a while, to check the status of your reservation.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: Ok, not an issue. Thank you for your kind information.

ASSISTANT: Thank you for availing our service.