You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

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

ASSISTANT: Sure, please provide me your name.

USER: My name is Rachel Martinez.

ASSISTANT: There is no reservation found with your name.

USER: Not an issue, thank you for the information.

ASSISTANT: Have a good day.