You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My business meeting has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, we are here to help you. Can I have your name to proceed further?

USER: Paul Thompson here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for availing us.