You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help 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 this?

ASSISTANT: Sure, I am here to help you. May I know your good name please?

USER: Sure, I am Kenneth Phillips.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

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

USER: Ok, Thanks for your service.

ASSISTANT: Thank you for reaching us.