You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,.

USER: I am Elizabeth Hill.

ASSISTANT: How may I aid you?

USER: I want to book a direct flight to travel from MCO to DCA. Can you help me?

ASSISTANT: Sure, help me with the trip dates?

USER: My trip dates are 09/13 - 09/15.

ASSISTANT: No flights found in your data given.

USER: Thanks for assisting me.

ASSISTANT: Thank you for opting us.