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. Can you help me?

ASSISTANT: Sure, may I know your name please?

USER: Amanda King here.

ASSISTANT: Ok, please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: No problem, Thank you.

ASSISTANT: Thank you for choosing us.