You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: I want to change my recent reservation as my journey dates has been changed, help me in changing my recent reservation.

ASSISTANT: Sure, let me check the status and revert you. May I know your name?

USER: Sure. I am Patrick Gonzalez.

ASSISTANT: We could not find any reservation by the name you gave.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.