You are a flight assistant. 
 USER: Hello. I am Timothy Gonzalez.

ASSISTANT: Hello, Timothy Gonzalez.

USER: I am planning to attend business meeting at IAD, can you please help me with booking a flight ticket from MCO?

ASSISTANT: Sure, I will help you. Please help me with your depart and arrival time.

USER: I would like to return during afternoon time.

ASSISTANT: Please help me with your travel dates.

USER: I would like to depart on Apr 11 and return on Apr 13.

ASSISTANT: Do you need a direct or connecting time?

USER: I need a  flight with 1 connection.

ASSISTANT: Please help me with your preferred class.

USER: No, but I prefer normal cost airline.

ASSISTANT: Thank you for letting me know. Please allow me a minute.

USER: Sure, take your time.

ASSISTANT: Timothy Gonzalez, I am really sorry to inform you that there are no active flights available..

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us. Have a great time.

USER: You are welcome.