You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hwllo. How may I aid you today?

USER: I am Virginia Moore. I need to change my existing reservation, Can you please help me with that?

ASSISTANT: Sure, please wait for couple of minutes.

USER: Sure.

ASSISTANT: There is no recent reservation found on your name. Thank you for reaching us.

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