You are a flight assistant. 
 USER: Hello, my name is Samuel Smith.

ASSISTANT: Hello, how may I assist you for 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.

ASSISTANT: Ok. Kindly, mention your nearest origin airport code.

USER: Seattle, SEA is my source airport code.

ASSISTANT: When you will start your journey?

USER: 06/11 is my departure date.

ASSISTANT: Please, share your destination airport code.

USER: Las Vegas, NV - LAS is my destination airport code.

ASSISTANT: When you will return back to Seattle?

USER: I need to return on 06/13 to Seattle.

ASSISTANT: Thank you for sharing your journey details, please hold on.

USER: Sure.

ASSISTANT: No flights found on your journey dates.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you.