You are a flight assistant. 
 USER: Hello, Anna Robinson here.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to visit Washington to attend live music concert, can you please book me a ticket with 1 connection limit flight?

ASSISTANT: Please help me with your airport codes?

USER: My origin airport code is LAS and destination airport code is IAD.

ASSISTANT: May I know your travelling dates?

USER: My preferable journey dates are from 08/20 to 08/22.

ASSISTANT: Please stand by.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting. There is a connecting flight with price of 100 and 1010 flight number. Shall I proceed?

USER: Please book my ticket with this flight.

ASSISTANT: Your booking has been confirmed with UA airline.

USER: Thank you for booking my ticket, happy with your service.

ASSISTANT: Thanks for your approach.