You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Rachel Robinson. I want to book a ticket from MCO to LGA to attend workshop, can you help me in booking?

ASSISTANT: Sure, help me with your journey dates.

USER: I am departing on 08/21 and return on 08/23.

ASSISTANT: Sorry, there is no flight found on your given dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for helping.