You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you?

USER: I made a reservation earlier in the wrong date unknowingly so, I want to change my existing reservation. Could you help me in changing?

ASSISTANT: Sure, we are here to help you. Please help me with your name so that I can check your details in our database.

USER: Sure, my name is Kenneth Evans.

ASSISTANT: Ok, let me check the status.

USER: Sure.

ASSISTANT: Sorry  Kenneth, there is no reservation found on your name to proceed further.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for consulting us.