You are a flight assistant. 
 USER: Hello, my name is Kathleen Williams.

ASSISTANT: Hello Kathleen. How may I help you?

USER: I want to book a flight ticket with one connection. Can you help me to book a flight from CO - DEN to DC - IAD?

ASSISTANT: Ok. May I Know your dates of journey?

USER: I will start my journey on 10/18 and return on 10/20.

ASSISTANT: Do you have any price limit?

USER: Price limit is 5000.

ASSISTANT: Thank you. We found an AA airline with one connection available and fare is 100. Shall I proceed with booking?

USER: Please, proceed with the booking.

ASSISTANT: Your booking is done and the flight number is 1012.

USER: Thank you for assisting me.

ASSISTANT: Thank you for opting us.