You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I would like to change my recent reservation, will you help me with that?

ASSISTANT: I am here to help you with your concern.

USER: Thank you for accepting my request.

ASSISTANT: May I know your name please?

USER: Myself Jonathan Hernandez.

ASSISTANT: Wait a while, kindly.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, there is no reservation found for the user name in our data base to change your previous booking.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.