You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I be at your service for the day?

USER: I am Elizabeth Campbell. I want to visit Seattle, SEA. Can you please do reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Do you need halt in your journey?

USER: I need a connecting flight.

ASSISTANT: Please, share your origin airport code.

USER: I am boarding at Las Vegas, LAS.

ASSISTANT: Kindly, mention your journey dates.

USER: My travelling dates are from 03/22 to 03/24.

ASSISTANT: Please wait for a while, I will search flight for you.

USER: Sure.

ASSISTANT: No flights found on your journey routes.

USER: Ok, Not an issue. Thank you.

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