You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: My client meeting got postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, I am gleeful to help you out. Please provide me your name to check the previous reservation details on your name.

USER: Brenda Wright here.

ASSISTANT: Sorry  Brenda Wright, there is no active reservation on your name in our reservation list.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.