You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Will you please help me in booking a flight ticket from DEN to LAS to attend a music festival?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: Ok, my planned trip dates are Aug 7 and Aug 9.

ASSISTANT: Please provide your name to proceed further.

USER: I am Michelle Walker.

ASSISTANT: Michelle Walker, here is a connecting flight in economy class. Can I proceed further?

USER: May I know the airline?

ASSISTANT: Ok, here is a low cost airlines that is Frontier.

USER: Do not proceed, I prefer only major airlines.

ASSISTANT: Sorry Michelle Walker, there is no flight in normal cost airlines.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.