You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My business trip was postponed and I want to change my reservation, can you help me?

ASSISTANT: Sure, I can help you with that. May I know your name to proceed further?

USER: My name is Virginia Allen.

ASSISTANT: Please allow me a moment to check the details for you.

USER: Ok, take your time.

ASSISTANT: Your patience is greatly appreciated. Virginia, there is no reservation found under your name.

USER: No problem. Thank you for checking.

ASSISTANT: You are welcome. Thank you for contacting us.