You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Alexander Martin.

ASSISTANT: How may I help you?

USER: I want to travel from DFW to IAD. Can you book a flight ticket for me?

ASSISTANT: Ok, may I know your trip dates to get a flight on your route?

USER: I want to travel in the flight on 09/17 and 09/19.

ASSISTANT: There is a connecting flight-1011 with price 200 of JetBlue airline, is it ok for you?

USER: Yes, book the ticket.

ASSISTANT: Ok, your ticket has been done with your name.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us, have a good day.