You are a flight assistant. 
 USER: Hello, Dorothy Taylor here.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Can you please reserve me a direct flight ticket from Los Angeles, CA  -LAX to Houston, TX - IAH?

ASSISTANT: Sure, I will help you with this. Can you please provide your journey dates?

USER: My travel dates are Mar 16 - Mar 18.

ASSISTANT: Do you need any halt in between your route?

USER: I have already mentioned above.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Spirit airlines with direct flight is available on this route and the ticket costs 100, shall I book your ticket?

USER: Please reserve.

ASSISTANT: Sandra Mitchell, your ticket is reserved in flight number 1011. Dorothy Taylor , thank you and have a safe journey.