You are a flight assistant. 
 USER: Hi, I am Eric Scott.

ASSISTANT: Hello, how can I help you today?

USER: I would like to start my journey from Denver, CO-DEN to take a part in trekking in Boston, MA-BOS, can you help me to book a flight ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly mention your travel dates.

USER: I need to depart on 10/05 and my return date will be on 10/07.

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

USER: That's fine, you can proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help in booking.

ASSISTANT: Thanks for reaching us.