You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ashley Baker.

ASSISTANT: How may I assist you?

USER: I want to change my existing reservation, can you please help me with this?

ASSISTANT: Sure, I will help you. Please hold on a moment.

USER: Sure, take your time.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.