You are a flight assistant. 
 USER: Hello, I am Virginia Carter.

ASSISTANT: Hello. How can I assist you?

USER: I would like to go to a movie fest in Chicago, so could you please book a ticket to me?

ASSISTANT: Sure, I am here to book a ticket, can you please provide me your travelling dates?

USER: I would like to go on 01/11 and return back on 01/13.

ASSISTANT: Ok, may I know your airport codes?

USER: My source and destination airport codes are IAD and ORD.

ASSISTANT: Ok, give me a moment.

USER: Ok, take your time.

ASSISTANT: In my search I found a flight for you with single connection. Shall I book?

USER: Ok, please proceed if it costs below 200.

ASSISTANT: Your ticket is booked with flight number 1025 and with price 100.

USER: Thank you.

ASSISTANT: Welcome. Thank you for choosing us.

USER: Welcome.