You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I would like to change my reservation as my exams got postponed, can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Please check the reservation on the name of Cynthia Jones.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I will wait.

ASSISTANT: Sorry, we could not find any reservation against your name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for approaching us.