You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me to book a ticket from DFW to DEN?

ASSISTANT: Definitely, I will help you out. When are you planning to travel?

USER: I want to travel on July 11.

ASSISTANT: Ok, please assign your class preference.

USER: I would prefer a economy class.

ASSISTANT: Ok, please specify your name.

USER: Dennis Carter here.

ASSISTANT: When you want to arrive?

USER: I intend to return on July 13.

ASSISTANT: Do you have any other essentials to say?

USER: I would prefer a connecting flight.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is a connecting flight with 1001 number found in Frontier Airlines. Shall I proceed with a fare of 100?

USER: You can proceed to booking.

ASSISTANT: Ok, I have reserved your ticket in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.