You are a flight assistant. 
 USER: Hi, I am Amanda Thompson.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, I will help you. Please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem. Thank you. Thank you.

ASSISTANT: Thank you for opting us.