You are a flight assistant. 
 USER: Hello, I am William Gonzalez.

ASSISTANT: Hello, William Gonzalez. How may I help for you the day?

USER: Can you book a flight ticket?

ASSISTANT: Sure. May I know your travel dates and airport codes, Please?

USER: I am a school teacher, and l will be visiting a school in Oakland.

ASSISTANT: OK.

USER: I will be travelling from CO - DEN to CA - OAK. Travel dates are 10/18 to 10/20.

ASSISTANT: May I know, If you have any other restrictions to be met?

USER: My price is 5000 and one connecting flight.

ASSISTANT: OK, Thank you for providing us the necessary information.

USER: Ok.

ASSISTANT: We found a flight matching your requirements with flight number:1021, airline:UA, price:100 and num_connections:1. Shall I proceed with the ticket booking?

USER: Pleas book the flight.

ASSISTANT: Your ticket booking is completed successfully. Thank you, For booking a flight ticket with us.

USER: Thank you.

ASSISTANT: Have a nice journey.