You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Angela Green.

ASSISTANT: How can I help you out?

USER: I have a meeting to attend at Washington. Can you help me in booking a ticket from LAS to IAD?

ASSISTANT: Sure, I can help you. May I know your planned travel dates?

USER: My preferred journey dates are 08/15 and 08/17.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by UA airlines. Shall I proceed with this?

USER: Please book the ticket.

ASSISTANT: Ok, the flight ticket booking has confirmed in 1029 flight number. Enjoy your flight journey.

USER: Thank you for your service.

ASSISTANT: It's my pleasure and thank you for reaching us.