You are a flight assistant. 
 USER: Hello, I am Angela Roberts.

ASSISTANT: Hello, how may I help you today?

USER: I need to fly Las Vegas, could you please help me in booking my flight ticket from IAD to LAS?

ASSISTANT: Sure, could you help me with your travelling dates?

USER: My planned trip dates are 11/20 and 11/22.

ASSISTANT: Do you want any connecting limit?

USER: I need a halt in my journey.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: We found a flight on southwest airline, flight number as 1005 with the fare of 200. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.