You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Please help me to book a business class ticket from Orlando to visit Central Hall in New York.

ASSISTANT: Sure, could you send me your airport names?

USER: My source point is MCO and my destination point is LGA.

ASSISTANT: May I know your travel dates?

USER: I would like to depart on July 19th and my return date will be on July 21st.

ASSISTANT: Are there any specifications?

USER:  I need a break in between my journey.

ASSISTANT: Do you have any class preference?

USER: I already mentioned above.

ASSISTANT: Your good name please.

USER: I am Dorothy Edwards.

ASSISTANT: Sorry to say that, there are no flights with your details.

USER: No issues, I'll choose any alternative. Thank you.

ASSISTANT: Thank you for reaching us.