You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

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 here to help you with that, can I know your good name to proceed further?

USER: Thank you. Myself Cynthia Adams.

ASSISTANT: I am sorry to say you that there is no reservation found under your name in our database.

USER: That's ok, no problem. Anyway thank you for checking out.

ASSISTANT: Thank you for reaching us.