You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Christopher Green, I want to book a flight to Denver, CO-DEN to visit Comic-Con with my friend. Can you book a economy class flight for me?

ASSISTANT: Let me know your travelling dates?

USER: I will fly on 02/24 and return on 02/26.

ASSISTANT: Can I know your boarding airport code?

USER: My boarding airport is GA-ATL.

ASSISTANT: Connecting flight can be booked with airline UA for price 100 having flight number 1008. Shall I book a ticket?

USER: Please proceed with booking.

ASSISTANT: Ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thanks.