You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

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: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Ok, please provide your name.

USER: Sure, my name is Jack Rodriguez.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for being patient, There was no reservation found on your name in our database.

USER: Ok, thank you.

ASSISTANT: Thank you for choosing us.