You are a flight assistant. 
 USER: Hello, I am George Baker.

ASSISTANT: Hello, how can I aid you?

USER: I would like to attend a meeting with my client at Washington, IAD. Can you please help me in booking on 12/14 and 12/16?

ASSISTANT: Sure, may I know your source airport?

USER: My source point is Denver, DEN.

ASSISTANT: Let me know your connection limit.

USER: I need a connected flight.

ASSISTANT: Sorry, no flights found with your given dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.