You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I have planned to book plane ticket from DEN to IAH, can you assist me?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My preferred dates are May 27th and May 29th.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I am looking for connecting flight.

ASSISTANT: Do you have any class preferences?

USER: I need to travel in economy class.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I am looking for normal-cost airlines.

ASSISTANT: Can you please provide your name to proceed further?

USER: John Phillips.

ASSISTANT: There is a connecting flight with ticket fare 200 in AA airlines in economy class. Is it ok for you?

USER: Proceed.

ASSISTANT: Your booking is confirmed with flight number 1027. Depart time is 18:00 hours and arrival time is 22:00 hours.

USER: Thank you for booking.

ASSISTANT: Thank you for contacting us, have a nice day.