You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I address you today?

USER: I have a reservation to attend a conference. But my conference has been completed in Skype. Can you please change my existing reservation?

ASSISTANT: Sure, to change your reservation I need to know your name.

USER: Ronald Taylor is name.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found on your name to change the reservation.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Thanks for approaching us.