You are a flight assistant. 
 USER: Hi. I am Mary Martin.

ASSISTANT: Hello, How can I be your helping hand today?

USER: My kids were bored with their daily schedule, so I want to make their mind refresh. I have decided to take a tour to Las Vegas. My kids were interested in art and science. So I have to take them to Discovery Children Museum. Reserve my seat from IAD to LAS.

ASSISTANT: Sure,. Kindly provide me your travelling dates?

USER: My journey dates are from 02/27 to 02/29.

ASSISTANT: Ok, please wait a moment, I will get back to you.

USER: Make sure that connection limit must be 1 and price limit should not exceed 1000. Ok, take your time.

ASSISTANT: Thanks for your patience, We are sorry to inform you that, we did not find any flights with your preferred dates.

USER: Ok, thank you.

ASSISTANT: Thank you for approaching us, Have a great day.