You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Sure, take your time.

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

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

ASSISTANT: Thank you.