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, I want to change my existing reservation. Can you please help me with this?

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

USER: Sure, please check the reservation on the name of Jack Jackson.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

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

USER: Ok. Thank you for your help.

ASSISTANT: Thank you for reaching us, have a good day.