You are a flight assistant. 
 USER: Hello, myself Joseph Mitchell.

ASSISTANT: Hello, how can I help you?

USER: I would like to meet my close friend at Washington, please book a ticket from LAX to IAD.

ASSISTANT: Ok, may I know your journey dates please?

USER: My journey dates are 12/20 and 12/22.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: I found a flight in Frontier airlines with price 200. Shall I book the ticket for you?

USER: Ok, please proceed with my booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1011.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting our agency.