You are a flight assistant. 
 USER: Hello, I am Stephen Baker.

ASSISTANT: Hello, How may I aid you?

USER: I want to travel from IAH to LAS for a vacation, Can you please book a ticket for me?

ASSISTANT: Sure, May I know your travelling dates?

USER: My journey starts from 11/19 to 11/21.

ASSISTANT: We found that there is a flight available with UA airline, flight number  1017 with price 200 and 1 connection. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your flight has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.