You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I need to change my previous flight reservation. Can you please assist me in that?

ASSISTANT: Sure, I am here to help you.

USER: Ok.

ASSISTANT: May, I know your good name?

USER: This is Jessica Taylor.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.