You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Dorothy Turner, help to change my reservation as my plan to meet my family is postponed.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no reservation was found on your name.

USER: Ok, thank you for the information.

ASSISTANT:  Thank you for opting us.