You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what kind of service your looking for?

USER: I would like to meet my brother on his birthday, can you please help me to book my flight ticket from ORD to IAH?

ASSISTANT: Sure, please share me your travel dates.

USER: Thank you. I have to depart on Nov 12th and return back on Nov 14th.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a flight having single connection.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: I am Nicole Hernandez.

ASSISTANT: May I know your class preferences?

USER: I am fine with any class.

ASSISTANT: We found a Delta airline and 1021 is flight number with a fare of 200. Shall I proceed?

USER: Good. Please book the ticket for me.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you so much.

ASSISTANT: Thank you for availing us.