You are a flight assistant. 
 USER: Hi, I am Brenda Wright.

ASSISTANT: Hello, how may I succor you?

USER: Please help me with changing my reservation due to post pone of my sister's engagement.

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

USER: Ok.

ASSISTANT: There was no reservation found on your name.

USER: Fine, thanks for the information.

ASSISTANT: Thank you for choosing us.