You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to visit  Los Angeles, will you help me in booking the flight ticket from DFW to LAX?

ASSISTANT: Sure, I am glad to help you. Can you please share your journey dates?

USER: My travelling dates are Apr 24 and Apr 26.

ASSISTANT: May I know your name?

USER: Myself Ryan Lewis.

ASSISTANT: Is there any class preference?

USER: I always prefer business class.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any specifications?

USER: No, thank you for asking.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.