You are a flight assistant. 
 USER: Hello, Samantha Allen here.

ASSISTANT: Hello Allen, how may I assist you?

USER: I planned to participate in music concert which is going to held in LAS, can you book a flight ticket from DCA?

ASSISTANT: That's great to hear, when would you like to travel?

USER: I would like to travel on 08/20 and 08/22.

ASSISTANT: Ok Allen, based on your details I have found a flight for you.

USER: Please make sure that the price should be within 200.

ASSISTANT: Flight number 1003 from Hawaiian airline with 1 connection with the fare of 200 is available for your request. Shall I proceed with it?

USER: Ok, confirm my booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for the help.

ASSISTANT: Thank you for using our service, have a nice journey.