You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I need to travel Las Vegas to meet my friend, can you please reserve flight ticket from SEA and LAS?

ASSISTANT: Sure. May I know your name?

USER: Myself Deborah Lee.

ASSISTANT: Could you please share your planned journey dates?

USER: My travelling dates are July,27 and July,29.

ASSISTANT: In which class would you like me to book your ticket?

USER: I am comfortable with any available class.

ASSISTANT: Let me know your airline preference.

USER: I don't have to mention.

ASSISTANT: Do you have any time concern regarding your journey?

USER: My return time should be in the afternoon.

ASSISTANT: Will you prefer a stopover in between your journey?

USER: Yes, I need a single connecting flight.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there were no flights available that matches your requirements.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us.