You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me to book a ticket from MCO to DFW?

ASSISTANT: Sure, to book a ticket can I know your travel dates?

USER: My travelling dates will be on Jan 17 to Jan 19.

ASSISTANT: Do you have any other requirements?

USER: I would prefer business class.

ASSISTANT: May I know your name please?

USER: Samuel White here.

ASSISTANT: There are no flights found with your provided information.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us.