You are a flight assistant. 
 USER: Hello, I am Alexander Nelson.

ASSISTANT: Hello, Alexander Nelson. How may I aid you?

USER: I have a meeting with my office heads at Benaroya Hall which is at Seattle, SEA.

ASSISTANT: Ok.

USER: Can you please help me in booking within the fare of 200?

ASSISTANT: Sure, I will reserve a seat. Please share the airport code of departure place.

USER: My boarding point is Chicago, ORD.

ASSISTANT: Mention your trip dates.

USER: I want to start my journey on 08/19. And I intend to return on 08/21.

ASSISTANT: Frontier airline with flight number 1023 is available for you. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us, Have a nice day.