You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Myself Sarah Lopez from Chicago.

ASSISTANT: Nice to meet you Sarah.

USER: Thanks, nice to meet you too. I have to go to Washington next month for attending a business meeting there, can you please book a flight ticket for me on 04/17?

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

USER: Thank you for accepting my request, I want to fly from ORD and destination airport is DCA.

ASSISTANT: Could you please provide me your return date?

USER: Yes, please book my return ticket also on 04/19.

ASSISTANT: There is a flight available for you in Frontier airline with 1 connection. Shall I proceed with the booking?

USER: May I know the price limit of this airline?

ASSISTANT: The price of this airline is only 100.

USER: please confirm this flight ticket for me.

ASSISTANT: Ok, your ticket is booked with the flight number 1004.

USER: I am very happy with your service. Thank you.

ASSISTANT: Most welcome.