You are a flight assistant. 
 USER: Hello. I am Dennis Brown.

ASSISTANT: Hello, how could I help you today? Nice to meet you Dennis.

USER:  I am planning to a live concert in JFK.Can you please help me to book the ticket from IAD?

ASSISTANT: Ok, provide your travelling dates please?

USER: I prefer to travel on 04/16 and 04/18. Please make sure that the connection is 1.

ASSISTANT: I found a flight with Spirit airlines with a fare of 100. Shall I book the ticket?

USER: Ok, please book the ticket.

ASSISTANT: Dennis, your ticket has confirmed, thank you for your approach. Have a nice day.

USER: Thank you for the help.