You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I benefit you?

USER: I am Anna Rodriguez. Can you help me in changing my recent reservation, as my exam is postponed?

ASSISTANT: Sure, let me check the current status and revert you.

USER: Ok.

ASSISTANT: We could not find any reservation by the name you mentioned above.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching us.