You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me in changing my recent reservation with the name Jacob Nelson?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: Please give me a moment, let me check your previous reservation status.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.