You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from MCO to DEN, can you help me?

ASSISTANT: May I know your travelling dates please?

USER: My travel dates are June 24 and 26.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Is there any other specifications?

USER: I prefer a economy class.

ASSISTANT: May I know your name please?

USER: I am Jack Wright.

ASSISTANT: I am sorry no flights found on your route.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.