You are a flight assistant. 
 USER: Hi, I am Kevin Edwards.

ASSISTANT: Hello, how may I serve you today?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait, I will check the reservation on your name and revert to you.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found with your name in our database.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for reaching us.