You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am looking for a flight from DEN to DCA, can you please help me in booking?

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: My travelling dates are Sept 20 and Sept 22.

ASSISTANT: Ok, please share me your name.

USER: My name is Brian Nelson.

ASSISTANT: Ok, do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Here, I found a flight for you with single connection and class is economy.

USER: Please proceed.

ASSISTANT: Your ticket is booked with flight number 1015 and airline is AA.

USER: Thank you for your service.

ASSISTANT: Welcome, have a safe flight.