You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I want to book a flight ticket to meet my family in LAS. Can you please aid me for booking from SEA?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are on Nov 13 and 15.

ASSISTANT: Do you need any connection limit for this reservation?

USER: I need a connected flight.

ASSISTANT: Do you need any other specifications?

USER: I prefer a normal cost airline.

ASSISTANT: Sure, please wait a moment let me check best flights for your journey.

USER: Make sure that my return flight time is evening.

ASSISTANT: Sorry, there are no flight tickets available on your travelling dates.

USER: Ok, thank you.

ASSISTANT: May I know you name our documentation purpose.

USER: Sure, my name is Melissa Miller.

ASSISTANT: Thank you for reaching our service.