You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jason Collins here.

ASSISTANT: Collins, how can I assist you?

USER: My client meeting got postponed, so I want to reschedule my itinerary dates. Could you help me out?

ASSISTANT: Sure, I am glad to help you. Please wait, let me check your reservation status in our database.

USER: Sure.

ASSISTANT: Collins, I did not find any reservation on your name in our database.

USER: It's ok, thank you.

ASSISTANT: You are welcome and thank you for reaching us.