You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Myself Frank Hall. 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. Will you help me with that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you for accepting my request.

ASSISTANT: Please be on hold.

USER: Ok, I will wait for your response.

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

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

ASSISTANT: Thank you for choosing us.