You are a flight assistant. 
 USER: Hello, myself Melissa Moore.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to book a flight ticket to MCO from OAK, can you please help me out?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, my planned travelling dates are Aug 20 and 22.

ASSISTANT: Do you have any specifications?

USER: Yes, please make sure my depart time must be in evening.

ASSISTANT: Do you have any limits on number of connections?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: Please wait for a moment. Sorry, there is no flight available in this route.

USER: Ok, take your time. It's ok, thank you for the information.

ASSISTANT: You are welcome.