You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to travel from IAD to DEN, can you please help me in flight booking?

ASSISTANT: May I know your dates on which you are planning to depart and arrive?

USER: I want to fly on June 12, return on June 14.

ASSISTANT: Are you comfortable with connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: Please let me know if you have any other specifications, I'll search for the flights according to that.

USER: I do not have any other specifications.

ASSISTANT: If you can help me with your name, I can check with the availability of flights.

USER: My name is Dennis Parker.

ASSISTANT: There is a flight in Southwest airlines with the ticket price of 100 having one connection and economy class. Can I proceed to booking?

USER: Ok, proceed to booking.

ASSISTANT: Your booking is confirmed and the flight number is 1014.

USER: Thank you.

ASSISTANT: Thank you for reaching us.