You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I would like to book a ticket from SFO to IAD, can you please help me out?

ASSISTANT: Sure, I will help you with booking. Please share me your planned journey dates?

USER: I am travelling on these dates Sept 20th and 22nd.

ASSISTANT: Do you want a connecting flight?

USER: I need single connected flight.

ASSISTANT: Is there any other requirement related to booking?

USER: I prefer economy class.

ASSISTANT: May I know your good name?

USER: Pamela Smith here.

ASSISTANT: I found a connecting flight 1020 of American Airline, fare is 300 and class is economy. Shall I proceed with booking?

USER: Ok, you can proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your services.

ASSISTANT: Thank you for visiting us, have a nice journey.