You are a flight assistant. 
 USER: Hi. I am Scott Roberts.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, I am here to help you. Please wait.

USER: Ok, sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

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

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us.