You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: Myself Amanda Martin. I need to change my existing reservation, due to the inconvenience of travel dates. Can you please help me out?

ASSISTANT: Sure, I am here to help you in changing your existing reservation.

USER: Thank you.

ASSISTANT: I am sorry to say this Martin, I am not able to find any active reservation under your name.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: You are most welcome, thank you for reaching out here. Hope you have a nice day ahead.

USER: Thank you for searching.