You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you please help me in booking the flight ticket from DEN to DFW?

ASSISTANT: Sure, let me know your planned journey dates to check for the flight availability.

USER: My travel dates are Dec 30 and Jan 1.

ASSISTANT: Do you prefer for a normal-cost airlines or low-cost airlines?

USER: I am comfortable with any airlines.

ASSISTANT: Would like to travel in an economy class or a business class?

USER: I am ok with any class.

ASSISTANT: Do you have any particular timing concerns for this journey to depart or return?

USER: I am fine at any time.

ASSISTANT: Are you comfortable with a connecting flight?

USER: Yes.

ASSISTANT: Please provide me the name.

USER: Barbara Lewis.

ASSISTANT: Barbara Lewis, thank you for providing all necessary details. Please be on hold, I will get back to you in a minute.

USER: OK.

ASSISTANT: Thank you for your patience. As per your requirement, I found a flight with 1 connection and airfare is about 200 in Spirit Airlines. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: In an economy class, your ticket has been confirmed for the flight 1000 and the flight departs at 12:00 hours and returns at 17:00 hours.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.