You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Anna Nelson here.

ASSISTANT: How can I assist you today?

USER: I am a model, I have a fashion show in Los Angeles. Please book my ticket from DTW to LAX.

ASSISTANT: Sure, can you please share your travel dates?

USER: My itinerary dates 03/10 and 03/12.

ASSISTANT: Let me check for the availability of flight.

USER: Sure.

ASSISTANT: Anna, I am sorry to inform you that there is no flight available at your requested dates.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.