You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I know your concern?

USER: I want to change my recent reservation as my political interaction with people got postponed due to heavy rains, can you please help me out?

ASSISTANT: Ok, please can I know your name?

USER: I am Dennis Young.

ASSISTANT: Ok, thank you for waiting. Sorry, there is no flight ticket been found on your name to amend.

USER: Ok, thanks for your information.

ASSISTANT: Ok, thank you for choosing our agency.