You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me to book a flight ticket from DFW to IAH?

ASSISTANT: Sure, can you please share your travel dates?

USER: I want to travel on 24 June and return on 26 June.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your airline preference?

USER: I prefer to travel in normal cost airline.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please let me know your name to proceed further.

USER: I am Nicholas Taylor.

ASSISTANT: UA airlines is providing you a flight with a ticket fare 100, shall I proceed with booking?

USER: Please ensure that I prefer normal cost airline can you check it once?

ASSISTANT: Yes, this a normal-cost airlines.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with the flight-1019 in economy class.

USER: Thanks for helping me.

ASSISTANT: Welcome, have a safe trip.