You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Joshua Mitchell. I have to book a flight ticket from Las Vegas, can you please help me to search the flight?

ASSISTANT: Sure, we are here to help you. May I know your airport codes?

USER: Thank you. My airport codes are LAS and DEN.

ASSISTANT: Kindly assign me your trip dates?

USER: The planned travel dates are July 02 and July 04.

ASSISTANT: Do you have any other requirements?

USER: Yes, I am able to afford up to 1000.

ASSISTANT: At what time, you want to travel?

USER: I can travel at any time.

ASSISTANT: There is a connecting flight with price of 200 and 1002 flight number. Shall I proceed?

USER: Yes, please book the ticket for me.

ASSISTANT: Your seat has been reserved in economy class with Southwest airline.

USER: Thank you so much for your guidance in reserving my flight ticket.

ASSISTANT: Thank you for opting us, I hope you are satisfied with our service.

USER: You are welcome.