You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to fly from MCO to IAD. Can you book a ticket from that route?

ASSISTANT: Sure,  can I have your travel dates please?

USER: My planned travel dates are 01/03 and 01/05.

ASSISTANT: Ok, please let me know your  preferable timings of your journey.

USER: I am comfortable with any timings.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight only.

ASSISTANT: Can I have your good name please?

USER: Sure, Margaret Taylor here.

ASSISTANT: Sorry to inform you that no flight is available to you on your  dates.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for choosing us, have a  good day.