You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I want to meet my uncle on his birthday, could you please help me to book my flight ticket from DCA to ORD?

ASSISTANT: Sure, I am here to help you with that booking. Can you please share your planned travel dates?

USER: Sure, I want to depart on Mar 20th and return back on Mar 22nd.

ASSISTANT: May I know your name please?

USER: My name is Steven Roberts.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I need a flight with single connection.

ASSISTANT: There is a connecting flight-1006 in Southwest Airlines with a fare of 100. Shall I proceed?

USER: Yes, please book the ticket for me.

ASSISTANT: Steven Roberts, your booking is done in economy class.

USER: Thank you so much for your help.

ASSISTANT: Thank you for reaching us, have a great day.