You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Melissa King.

ASSISTANT: How can I help you Melissa?

USER: I need to attend a concert in IAD, can you book a ticket from SFO?

ASSISTANT: Ok, can I know your travelling dates?

USER: My travel dates are from 04/23 to 04/25.

ASSISTANT: Ok. I had found a flight for you with a price of 200 and a connection of 1. Can I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: The flight number is 1005 of AA airlines. You are welcome.