You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Deborah White.

ASSISTANT: How may I help you?

USER: I would like to travel from MCO to IAD, could you help me out?

ASSISTANT: Sure, can I know your travel date?

USER: My preferable dates are from 09/14 to 09/16.

ASSISTANT: Sorry, there are no flights for the given schedule.

USER: Please proceed with the booking. Thank you for your help.