You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brenda King.

ASSISTANT: How can I assist you?

USER: I need to book a flight ticket from IAD to LAX, Can you please help me for booking?

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to travel on Apr 20 and return on Apr 22.

ASSISTANT: Here is a connecting flight with fare 100 and 1000 as flight number providing ticket in economy class. Shall I proceed with booking?

USER: Ok, proceed for booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.