You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me in booking a flight ticket from Houston, HOU to reach Denver, DEN?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My travelling dates are from Oct 30 to Nov 01.

ASSISTANT: Do you have any preferences?

USER: I need a connection in between journey.

ASSISTANT: May I know your name please?

USER: My name is Charles Mitchell.

ASSISTANT: There is a connecting flight available with Frontier airline, shall I proceed?

USER: Sure, you can proceed for booking.

ASSISTANT: Your booking is done with flight number 1029. Happy journey.

USER: Thanks for your help.

ASSISTANT: You are welcome, have a nice day.