You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you at this moment?

USER: I am looking for a flight from LAX to meet my sister at MCO. Can you book a flight for me?

ASSISTANT: I am happy to help you in booking your flight ticket. Can you please provide your scheduled dates of journey?

USER: I will travel on Dec 19 and return on Dec 21.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight for this trip?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other requirement for your journey to met with?

USER: Please book my depart flight in evening.

ASSISTANT: Can you please let me know your name for further proceeding?

USER: My name is Melissa Hall.

ASSISTANT: Sorry to say this Melissa Hall, there are no flights which travels on your route on your planned dates of journey.

USER: Ok, thank you for the information.

ASSISTANT: You are welcome, thank you for reaching us.