You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I oblige you today?

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

ASSISTANT: Sure, we are glad to help you. Could you please provide your name to check your previous reservation status?

USER: My name is Daniel Anderson.

ASSISTANT: Please wait for some time, I will check with your reservation status and revert to you.

USER: OK.

ASSISTANT: Sorry, we do not found any reservation with your name.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thanks for approaching us.