You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Dorothy Clark, can you help me to book a flight from LAX?

ASSISTANT: May I know your travelling  dates?

USER: My dates are 10/21 and 10/23. My destination is MCO. Please search a direct flight.

ASSISTANT: Sorry, there is no flight available under your request.

USER: Ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your time.

ASSISTANT: You are welcome.