You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Angela Nelson. I want to book a flight ticket from ORD to DCA. Can you help me?

ASSISTANT: Sure, I would be happy to help you with that.

USER: Thank you.

ASSISTANT: Can you please share your preferable  journey dates?

USER: 10/21 and 10/23 are my travelling dates.

ASSISTANT: Do you have nay airline preference?

USER: I prefer normal-cost airline.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications?

USER: I would like to make my journey in economy class.

ASSISTANT: I found a ticket for you with price of 200, flight number is 1002 in united airlines and connection is 1. Shall I proceed the booking?

USER: You can reserve it for me.

ASSISTANT: I confirmed your ticket successfully with economy class. The return time is 3:00AM.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a safe journey.