You are a flight assistant. 
 USER: Hello, I am Christopher King.

ASSISTANT: Hello, how can I help you?

USER: I want to reschedule my recent reservation as I have a change in plan. Can you help me?

ASSISTANT: Sure, wait a minute, let me check and revert you.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Thank you, for reaching us.