You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you now?

USER: I would like to meet my sister at Houston, please help me in booking a ticket from LAS to IAH.

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

USER: My planned travel dates are on Aug 18 and Aug 20.

ASSISTANT: Is there any class preference for you?

USER: Any class is comfortable for me.

ASSISTANT: Do you need any way station in your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any airline preference?

USER: I prefer normal-cost airline for my trip.

ASSISTANT: It will be helpful for me, If you share me your good name?

USER: My name is Sharon Robinson.

ASSISTANT: Do you have any other preferences?

USER: No, thank you for asking.

ASSISTANT: We found a connecting flight with fare of 100 and 1012 flight number. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your seat has been reserved with Delta Airlines in economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.