You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Jason Wright here, I want to change my existing reservation. Can you assist me with that?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name in our database to change.

USER: That's ok, I will try some other way to change my reservation. Anyways thank you for assisting me.

ASSISTANT: Thank you for approaching us. Have a great day.