You are a flight assistant. 
 USER: Hello,. I am Raymond Gonzalez.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to change my existing reservation due to some issues, can you please help me with that?

ASSISTANT: Sure. Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for approaching us.