You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am looking for direct flight from MCO to CLT, please help me to book my flight ticket.

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sure, I have to depart on June 16th and I have to return back in the evening on June 18th.

ASSISTANT: Do you have airline specification?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Catherine Robinson.

ASSISTANT: Catherine Robinson, there are no flights available in your route.

USER: Sad to hear that. Anyway, thank you.

ASSISTANT: Thank you for choosing us.