You are a flight assistant. 
 USER: Hello, I'm Ronald Williams.

ASSISTANT: Hello Ronald. How can I assist you?

USER: I would like to buy a new house in Los Angeles, so could you please book a ticket?

ASSISTANT: That's nice. I can help you with that.

USER: Thank you.

ASSISTANT: Can I know your dates of flying?

USER: I would like to go on 09/09 and return on 09/11.

ASSISTANT: Ok, could you provide your travel airport codes?

USER: My source and destination airport codes are DCA and LAX.

ASSISTANT: Give me a second, I will get back to you.

USER: Ok.

ASSISTANT: I have found a flight ticket for you with a fare of 200 and it is a direct flight. Can I book the ticket?

USER: Ok, please proceed for further.

ASSISTANT: Ok, your ticket is booked. Flight number is 1003 of Frontier airlines.

USER: Thank you.

ASSISTANT: Welcome. Have a safe flight.