You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Sarah Anderson from Houston. Can you please book a direct flight ticket to Las Vegas?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please share your preferable journey dates?

USER: I want to take off on 05/18 and please book my return ticket also on 05/20.

ASSISTANT: Can you please mention your source and destination airport codes to proceed further?

USER: I want to fly from HOU and destination airport is LAS.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: I found a ticket for you with price of 300, flight number is 1007 and connection is 1. Is it ok for you?

USER: Please confirm this flight ticket for me.

ASSISTANT: I confirmed your ticket successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.