You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am George Rodriguez. Can you please help me in changing my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check the status of your reservation.

USER: Ok.

ASSISTANT: George Rodriguez, no reservation has been found on your name in our database.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.