You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: Myself Robert Rodriguez from Los Angeles. I have to go to Washington in this month. Can you please book a flight ticket from LAX to IAD?

ASSISTANT: Sure, can you please share your planned travel dates?

USER: Thank you for your positive response, I want to take off on 06/20 and please confirm my return ticket also on 06/22.

ASSISTANT: Please give me a moment.

USER: Ok, take your time and find a best flight for me.

ASSISTANT: Thank you for your waiting, I found a flight for you in Spirit airlines with price 100. Can I proceed?

USER: Please proceed.

ASSISTANT: Ok, your booking is confirmed with flight number 1016.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing our service.