You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to spend some more days with my family, please help me in changing my existing reservation.

ASSISTANT: Sure, I am here to help you in that. Please give me a moment to check your reservation status.

USER: Sure, take your time.

ASSISTANT: May I know your name please?

USER: My name is Raymond Gonzalez.

ASSISTANT: Sorry, there is no reservation on your name to change.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.