You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am planning to visit my grand father on his birthday, can you please help me to book a flight from DFW to LAS?

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

USER: Sure, I will travel on Jan 21st and 23rd.

ASSISTANT: Do you have any connection limit?

USER: I am fine with maximum one connecting flight.

ASSISTANT: On whose name I have to book the flight ticket?

USER: On my name, Raymond Harris.

ASSISTANT: Any other preferences do you have?

USER: No.

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

USER: Sure.

ASSISTANT: Thank you for your information, there is a flight 1013 with a 1 drop off in Southwest airlines and the fare of the ticket is 100 in economy class. Is it ok for you to book the ticket?

USER: Please proceed with the booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you.

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