You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Nicole Rodriguez.

ASSISTANT: How can I guide you at this moment?

USER: Suddenly I got a call from my manager to attend a meeting on same departure date, so I need to change my existing reservation. Can you please help me?

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

USER: Ok, I will wait for your response.

ASSISTANT: Nicole Rodriguez, I have searched the database with your name and I couldn't find any active reservation under your name.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.