You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Samantha Wilson.

ASSISTANT: How may I aid you?

USER: I would like to change my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you for considering my request.

ASSISTANT: Samantha Wilson, we haven't found any reservation under your name in our database.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for approaching us.

USER: Thank you for searching.