You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: I am planning to travel to Denver, CO-DEN, due to my college admission. So please help me in searching a flight ticket.

ASSISTANT: Sure, can I know the trip dates please?

USER: I have planned my trip for these dates 04/24 and 04/26.

ASSISTANT: Can you provide the departure code please?

USER: I want to travel from Phoenix, AZ-PHX.

ASSISTANT: May I know your name for proceed further?

USER: My name is Frank Taylor.

ASSISTANT: Frank, there is a flight for you with flight number 1015 and airline is Spirit. Shall I proceed with the booking?

USER: Ok, please confirm my ticket to this flight.

ASSISTANT: Your ticket has been booked. Thank you for approaching us.

USER: Thank you for helping me in ticket booking.

ASSISTANT: Have a safe journey.