You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please book me a business class flight from MCO to PHL to meet my family?

ASSISTANT: Sure, may I know your planned journey dates please?

USER: I have planned to travel on Dec 21st and return on Dec 23rd.

ASSISTANT: Can I have your name please?

USER: Frank Lee.

ASSISTANT: Do you need a connecting flight?

USER: I like connecting flight.

ASSISTANT: Frank Lee, no flights has been found on your planned travel dates.

USER: Ok, problem. Thank you.

ASSISTANT: Thank you for approaching us.