You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to visit one of the famous place in Las Vegas that is Stratosphere Las Vegas. So I need a flight ticket from Houston. Can you assist me?

ASSISTANT: Good, can you provide your airport codes?

USER: My origin airport is IAH and the destination airport is LAS.

ASSISTANT: Ok, please let me know your dates to of travel.

USER: I planned to travel on the date 03/17 and arrival date is 03/19.

ASSISTANT: May I know your name?

USER: Sure, I am Barbara Moore.

ASSISTANT: Based on your request, we don't have a flight for you Moore.

USER: It's ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.