You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Michael Thompson. I want your help in making some changes in my existing reservation, due to the busy schedule on my previously planned dates. Can you please help me with this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your reservation status.

USER: Ok.

ASSISTANT: Michael Thompson, no reservation has been found on your name in our database.

USER: Ok, Thank you.

ASSISTANT: Thank you for approaching us.