You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I would like to travel from DFW to IAH. Can you please help me to book a ticket?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: My travelling dates will be on Oct 6 to Oct 8.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your airline preference?

USER: I would prefer normal-cost airlines.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: There is a flight from Delta airlines which is matching to your requirements, shall I proceed with booking?

USER: You can proceed to booking.

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

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Anna Hall here.

ASSISTANT: Welcome, have a safe journey.