You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what type of help your are looking from our service?

USER: I am planning to meet my friend who is in Detroit. Can you find any flights available from IAD to DTW?

ASSISTANT: Sure, may I know your travelling dates of your journey?

USER: I am planning my journey on 01/09 and return on 01/11.

ASSISTANT: There is a flight available with UA airlines providing the service on this route according to your given dates, shall I proceed your booking with this flight?

USER: Please book the ticket if the price is below 200.

ASSISTANT: Flight ticket costs only 100 from our service.

USER: That's perfect. Please book the ticket.

ASSISTANT: Your ticket is successfully booked with the flight number 1011.

USER: Thank you for your help.

ASSISTANT: May I know your name for our documentation purpose?

USER: My name is Kenneth Mitchell.

ASSISTANT: Thank you for the information. Have a safe journey.

USER: You are welcome.