You are a flight assistant. 
 USER: Hello, I am James Taylor.

ASSISTANT: Hello, what can I do for you?

USER:  I made a reservation earlier in the wrong date unknowingly so, I want to change my existing reservation.

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation was found based on your name.

USER: Ok, Thank you.

ASSISTANT: Thank you for availing us.