You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I wan to update my recent reservation as my trip got postponed. Can you change my reservation made on the name Kenneth Garcia.?

ASSISTANT: Sure, we are here to help you. Wait for some time.

USER: Ok.

ASSISTANT: Thanks for your time there is no reservations found on your name.

USER: Ok fine. Thanks for your assistance.

ASSISTANT: Thanks for choosing us.