You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am Amy Thompson. I want to do some modifications in my previous reservation, due to some health issue. Can you please help me out?

ASSISTANT: Sure, I am here to help you. I regret to inform you that, there is no reservation found on your name in our database.

USER: Ok, no issues. Thank you for your time.

ASSISTANT: Thank you for approaching us.