You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Gary Scott here. I would like to attend a meeting at Charlotte, please help me in booking a ticket from DEN to CLT.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Could you please share your planned journey dates?

USER: My planned journey dates are on June 15 and June 17.

ASSISTANT: May I know, In which class would you like me to book your ticket?

USER: Any class is comfortable for me.

ASSISTANT: Let me know your connection limit.

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: I would like to return in the evening.

ASSISTANT: Give me a minute, I will let you know the flight availability.

USER: Sure, take your time.

ASSISTANT: Thank you for your time, there is a flight available with single connection and fare 100 in Southwest airline which will depart at 5:00 AM and return at 2:00 AM. Can I reserve it?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been confirmed in economy class with flight number 1010.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.