You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I want to book a ticket from IAD to DFW to attend seminar, can you help me in booking?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: I am departing on Feb 12 and return on Feb 14.

ASSISTANT: May I know your name?

USER: My name is Andrew Campbell.

ASSISTANT: Do you have any other specifications?

USER: I prefer a connecting flight.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Sure, take your time.

ASSISTANT: We found Southwest airlines with connecting flight and number 1022 fare of 600 with business class, Shall I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thanks for approaching us.