You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need to meet my friend, can you help me in booking a ticket?

ASSISTANT: Sure, may I know your name please?

USER: I'm Paul Williams.

ASSISTANT: Ok Paul, may I know your respective airport codes please?

USER: My airport codes are IAD and DEN.

ASSISTANT: Ok, may I know your dates of travel please?

USER: It's from 01/30 to 02/01.

ASSISTANT: The flight with airline Frontier and number 1020 with connections limit 1 of cost 100 has found. Shall I proceed to book?

USER: Please book the ticket.

ASSISTANT: Your ticket has booked. Thank you.

USER: Thank you for your help.

ASSISTANT: Have a nice day.