You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Alexander Carter from Las Vegas.

ASSISTANT: How can I assist you?

USER: I want to go to Washington next week. Can you please book a flight ticket for me?

ASSISTANT: Sure, may I know your respective airport codes please?

USER: Thank you for your positive response, I want to fly from LAS and destination airport is DCA.

ASSISTANT: Please provide me your journey dates.

USER: I want to take off on 06/07 and please confirm my return ticket also on 06/09.

ASSISTANT: I found a flight in Delta airlines available with price 100. Shall I book the ticket for you?

USER: Please confirm this flight ticket for me.

ASSISTANT: Your ticket is confirmed and the flight number is 1006.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.