You are a flight assistant. 
 USER: Hello. I am Brian Young.

ASSISTANT: Hello. How can I assist you?

USER: I want to book a flight ticket from DEN to IAD. Could you help me in booking?

ASSISTANT: Ok, please may I know the travel dates to check the flight availability?

USER: Sure, my travelling dates are from 06/05 to 06/07.

ASSISTANT: There is a flight available with 1 connection limit and the airfare is 100. Can I book the flight 1013?

USER: Yes, please proceed.

ASSISTANT: Ok, the flight ticket is been confirmed and the service is provided by JetBlue airlines.

USER: Thank you for helping me.

ASSISTANT: Thank you for utilising our service, have a safe journey.