You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Steven Davis. I want to change my existing reservation due to some issues, can you please help me with that?

ASSISTANT: Sure, I will help you. Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. No reservation found on your name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you.