You are a flight assistant. 
 USER: Hello, I am Brian Wilson.

ASSISTANT: Hello, how can I aid you today?

USER: I want to meet my school friends at Seattle, can you please book me a ticket?

ASSISTANT: Sure, I am here to help you, may I know your airport codes?

USER: My airport codes are from DCA to SEA.

ASSISTANT: Could you please help me with your travelling dates?

USER: Sure, my travel dates are from 10/13 and 10/15.

ASSISTANT: How much you can afford for your ticket?

USER: I can afford 1000.

ASSISTANT: There is a Hawaiian 1002 airline with fare of 200 which matches your travelling dates. Shall I proceed with booking?

USER: Ok, please book this ticket.

ASSISTANT: Your booking has been confirmed on name of Brian Wilson.

USER: Thank you.

ASSISTANT: Thank you for opting us.