You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I have a examination in Chicago to get promotion, so please book a flight ticket from DEN to ORD.

ASSISTANT: Sure, can you please give me your planning dates?

USER: My departure date is 11/14 and the return date is 11/16.

ASSISTANT: Can you please provide me with your name? Sure, give me a minute.

USER: My name is Jessica Harris. Ok.

ASSISTANT: There is a flight with price 200 and flight number is 1017. Is it ok for you?

USER: Ok, please proceed with the booking ticket.

ASSISTANT: I confirm your ticket successfully. Thank you.

USER: Thank you for booking me a ticket.