You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me in booking my flight ticket from MCO to LAX?

ASSISTANT: May I know your travel dates?

USER: My trip dates will be Nov 19th to Nov 21st.

ASSISTANT: Do you have any connecting flight preferences?

USER: As it is an emergency, I would like to travel in a direct flight.

ASSISTANT: Is there any other concern?

USER: I prefer a economy class.

ASSISTANT: May I know your name please?

USER: I am Christopher Nelson.

ASSISTANT: No flights found as per your preferences on desired routes at the moment.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.