You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, I will help you with the change of flight reservation. Please wait. May I know your name please?

USER: Sure, please check the reservation with the name Jonathan Taylor.

ASSISTANT: Thanks for waiting patiently. But I regret to inform you that that there is no flight reservation on your name to change it.

USER: Its ok, thank you.

ASSISTANT: Thank you.