You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, we are perky to help you.

USER: Thank you for accepting my request.

ASSISTANT: May I know your good name?

USER: Myself David Gonzalez.

ASSISTANT: Please be on hold.

USER: Ok, I will wait.

ASSISTANT: There is no reservation found on your name in our database to change it.

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

ASSISTANT: Thank you for reaching us.