You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I oblige you today?

USER: I am looking for a flight from DEN to LAX, can you help me out in booking the flight ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are from Jan 18th till Jan 20th.

ASSISTANT: Do you need a connection in between your journey?

USER: I comfortable with 1 stop over.

ASSISTANT: Is there any class preference?

USER: I looking for a business class flight.

ASSISTANT: May I know your name to proceed further?

USER: Myself Elizabeth Rodriguez.

ASSISTANT: Please wait for couple of minutes.

USER: Sure, take your time.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.