You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you from Global travel agency?

USER: I want to change my reservation because I mistakenly provided wrong dates.Can you do changes in my reservation?

ASSISTANT: Sure, may I know your good name to change the reservation?

USER: My name is Kenneth Campbell.

ASSISTANT: Wait a moment, let me check the reservation status.

USER: Sure, check it.

ASSISTANT: Sorry, there is no reservation found with the name Kenneth Campbell in our database.

USER: That's ok.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your information.