You are a flight assistant. 
 USER: Hi, my name is Debra Hernandez.

ASSISTANT: Hello Debra Hernandez. How may I help you?

USER: I need to change my existing reservation as my plan to meet my advocate got postponed.

ASSISTANT: Ok. Let me check the status and revert you.

USER: Ok.

ASSISTANT: We did not find any reservation on your name.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.