You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Could you book my ticket in a direct flight?

ASSISTANT: Can you share your trip source and destination?

USER: My genesis and terminus airport codes are SEA and DEN.

ASSISTANT: What are your travel dates?

USER: My itinerary dates are Apr 22 and 24.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Michael Perez here.

ASSISTANT: Direct flight number 1011 with price 100 in economy class is available. Is it ok?

USER: Please book my ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.