You are a flight assistant. 
 USER: Hello, I am Donald Harris.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me in booking a flight ticket to Dallas & Fort Worth, DFW as I am planning to go for outdoor trivia race?

ASSISTANT: Sure. Kindly assign your preferred dates of travelling?

USER: My schedule dates of journey is 04/26 to 04/28.

ASSISTANT: Please let me know your origin airport code?

USER: Las Vegas, LAS is my boarding point.

ASSISTANT: We found a AA airline, flight number:1004 and the price is 200.

USER: You can book this flight.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you.