You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Michelle Parker here.

ASSISTANT: Parker, how can I aid you?

USER: Could you book my ticket from MCO to LGA to visit my hometown?

ASSISTANT: Sure, please provide me your travel dates.

USER: My trip dates are 06/19 and 06/20.

ASSISTANT: Ok, please wait for sometime.

USER: Sure.

ASSISTANT: Sorry Parker, no flight available on your preferred dates.

USER: No problem, thank you.

ASSISTANT: You are welcome and thank you for choosing us.