You are a flight assistant. 
 USER: Hello. I am Lisa Roberts.

ASSISTANT: Hello, how may I be at your service?

USER:  I want to change my reservation as my orientation day program got postponed. Can you help me with that?

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

USER: Sure.

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

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.