You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Edward Davis.

ASSISTANT: How may I assist you at this moment?

USER: I am planning to visit Las Vegas to watch film festival, can you please book me the ticket from IAD to LAS?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: I want to depart on July 19 and would like to return on July 21.

ASSISTANT: Is there any additional requirements do you want?

USER: I need a connecting flight in this journey.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure, I will wait for your response.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 200 which is provided by Southwest airlines. Would you like to book this flight for your journey?

USER: That's ok for me. Please book my ticket with this airlines.

ASSISTANT: Ok, your ticket has been successfully confirmed in flight number 1022.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for reaching us, have a great journey.