You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I am from a geographical channel and got an information about dinosaurs at Washington, so we are going to take photos. Please help me with booking a connecting flight.

ASSISTANT: Sure, I will book a flight. To proceed further, I need your travelling dates.

USER: My travelling dates are from 06/03 to 06/05.

ASSISTANT: Ok. May I know your airport codes please of both locations?

USER: Its from DEN to DCA.

ASSISTANT: Kindly share your name.

USER: I am Emma Brown.

ASSISTANT: Are you willing to travel with a direct flight?

USER: No.

ASSISTANT: Ok, we can not provide you a connecting flight.

USER: Fine, thank you.

ASSISTANT: Thank you for picking us, Have a nice day.