You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gregory Martinez.

ASSISTANT: Do you want me to help you with anything?

USER: I am planning to attend my brother's marriage in IAH.Can you please help me to book the flight ticket from LAS?

ASSISTANT: Sure, can you please give me your planning dates?

USER: I prefer to travel on 01/02 and 01/04.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I found a ticket for you.The price is 100 and flight number is 1001. Is it ok for you?

USER: OK, please confirm my booking.

ASSISTANT: I have successfully confirmed your ticket.

USER: Thank you for the help.

ASSISTANT: Thank you for your help.