You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Sarah Harris. I want to book a ticket from PHL to MCO to meet my uncle, can you help me in booking?

ASSISTANT: Sure, can you please share your travel dates?

USER: I am departing on 03/19 and return on 03/21.

ASSISTANT: Let me check for the availability of flight.

USER: Sure.

ASSISTANT: Sarah, there is no flight available at your requested dates.

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

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