You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Myself Steven Parker. For some issues I want to change my reservation, can you please help me?

ASSISTANT: Ok Steven Parker, I will help you out in changing your reservation.

USER: Sure.

ASSISTANT: Sorry, there are no reservations found on this name.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for choosing our services.