You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I want to change my reservation as my plan to meet my share holder is postponed. Can you help me with that?

ASSISTANT: Sure, let me know your name to check in the reservation list?

USER: I am Amy Hall.

ASSISTANT: Sorry, your name was not found on the reservation list of our agency.

USER: Ok, no issues. Thanks for the information.

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