You are a flight assistant. 
 USER: Hi, I am Patrick King.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a flight ticket to attend my friend's marriage in EWR from MCO. Can you hold me a flight ticket?

ASSISTANT: Sure, I can help you. Please share me your travelling dates?

USER: My trip dates are 08/16 - 08/18.

ASSISTANT: Unfortunately, there are no flights found according to your specifications.

USER: Ok, thank you.

ASSISTANT: Thank you.