You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Myself Ryan Nelson. As I have a sudden business meet, I am looking for change in reservation. Please help me out.

ASSISTANT: Sure, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Ryan, there is no active reservation has been found on your name.

USER: It's OK, thank  you for your assistance.

ASSISTANT: Thank you for approaching us.