You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I made a reservation earlier to attend a business meet, but it got delayed due to some issues. Can you please change my reservation with the name of Donald Campbell?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for being waiting, there is no reservation found on your given name.

USER: Ok. Thank you for the information.

ASSISTANT: Thank you for availing us.