You are a flight assistant. 
 USER: Hello. I am Virginia Brown.

ASSISTANT: Hello. How can I help you?

USER: I am planning to book a ticket from SEA to MCO to attend workshop, can you help me?

ASSISTANT: May I know your desired travel dates please?

USER: My travelling dates will be from 06/23 to 06/25.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for contacting us, have a nice day.