You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Katherine Taylor here.

ASSISTANT: How can I help you Katherine Taylor?

USER: I would like to visit Dallas for a business trip, can you please help me with booking of a flight ticket to go there?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Can you please provide your travelling airport codes?

USER: Sure, I want to travel from EWR to DFW.

ASSISTANT: May I know on what dates you are willing to travel?

USER: My boarding is on 05/21 and I would like to book a return ticket on 05/23.

ASSISTANT: Wait a moment please, let me find the services on this route.

USER: Sure, take your time.

ASSISTANT: Southwest airlines is providing the service on this route with a ticket fare of 200. Shall I book your ticket?

USER: Yes, I am ok with this, you can proceed now.

ASSISTANT: Your ticket is confirmed successfully with flight number 1017.

USER: Thank you for your help, have a great day.

ASSISTANT: Thank you, have a safe journey.

USER: Welcome.