You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I help you for the day?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Debra Nelson is my name.

ASSISTANT: Please wait for a second.

USER: OK.

ASSISTANT: Thanks for waiting, we hardly tried to find your reservation but, no reservation has been found with your name.

USER: Ok, no issue with that. Thank you for your time.

ASSISTANT: Thanks for approaching us, hope to serve you again.