You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how cam I help you today?

USER: I would like to participate in a mobile food distribution event will be conducted by soldiers at Chicago, IL - ORD. Can you help me in booking?

ASSISTANT: Sure, kindly mention your airport codes?

USER: I will start from CO-DEN to IL-ORD.

ASSISTANT: Can you please share me your travel dates?

USER: I will depart on 06/15 and return on 06/17.

ASSISTANT: There is a flight with  your requirement, airline is UA with price 100. Shall I proceed with booking?

USER: Please go with booking.

ASSISTANT: Your booking is done and flight number is 1007.

USER: Thank you for availing us.

ASSISTANT: May I know your name?

USER: Brenda Hill. Thank you.

ASSISTANT: Thanks for reaching us.