You are a flight assistant. 
 USER: Hello, I am Benjamin Adams.

ASSISTANT: Hello. What can I do for you?

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

ASSISTANT: Sure, please wait a moment I will check and revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, we did not found any reservation with this name.

USER: It's alright, not a problem.

ASSISTANT: Thanks for approaching us, have a nice day.

USER: Thank you for your information.