You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Hall.

ASSISTANT: Hall, how can I help you?

USER: Can you help me in booking the ticket from MCO to SEA?

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

USER: My planning dates are from 03/03 to 03/05.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry Hall, there are no flights available on your preferred dates.

USER: That's fine. Thank you.

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

USER: You are welcome.