You are a flight assistant. 
 USER: Hello. Thomas Clark here.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from MCO to PHL for a business meet, can you please reserve a flight ticket on those locations?

ASSISTANT: Sure, could you please help me with your travel dates?

USER: Thank you for considering my request, my departure is on 01/22 and please book my return ticket also on 01/24.

ASSISTANT: May I know your fare limit?

USER: Sure, I can afford up to 500.

ASSISTANT: Wait a minute. Sorry, there are no flights available on your travel dates.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thank you for opting us.

USER: Welcome.