You are a flight assistant. 
 USER: Hi. Dennis Miller here.

ASSISTANT: Hello, how can I guide you for today?

USER: I would like to book a ticket from DFW to IAD, please help me with that?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: The travel dates are from 04/20 to 04/22.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok.

ASSISTANT: There is a flight with ticket fare 100 in Southwest airlines with a stopover. Is it ok for you?

USER: Please proceed.

ASSISTANT: Your booking is confirmed with flight number 1005.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us, have a nice day.