You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to change my reservation due to some health issues, can you please help me out with that?

ASSISTANT: Sure, I am happy to help you. Can I know your name please?

USER: Thank you. Myself Anthony Evans.

ASSISTANT: Ok, it takes sometime to check your ticket status. Please allow me sometime.

USER: Sure, take your time.

ASSISTANT: I am sorry to tell you, there is no active reservation found with your name to change the ticket details.

USER: Ok, no problem. Anyway thank you for checking out.

ASSISTANT: Most welcome. Thank you for consulting us.