You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Mary Taylor, planning to visit Denver. Can you please book me the ticket in direct flight from Los Angeles?

ASSISTANT: Sure, may I know your travel dates?

USER: My preferable journey dates are from 05/11 to 05/13.

ASSISTANT: Please share me your airport codes?

USER: My nearest airport codes of journey are from LAX to DEN.

ASSISTANT: How much you can afford for this ticket?

USER: I can afford 500 for this trip.

ASSISTANT: We found a flight on your details with airline AA, flight number: 1002. Shall I reserve this ticket?

USER: Please reserve my ticket with this airlines.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you.