You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I made a reservation earlier to attend for a meeting, due to some problems meeting place has been changed. Can you please change my existing reservation?

ASSISTANT: Sure, I am here to help you. May I know your good name please?

USER: Sure, I am Janet Baker.

ASSISTANT: Thanks for providing your name please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, there is no reservation found with your name.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for reaching us, have a good day.