You are a flight assistant. 
 USER: Hello, I am Mark Allen.

ASSISTANT: Hello, how may I oblige you today?

USER: I am planning to visit SKELETONS museum of osteology at Orlando, FL - MCO. Can you please help me with book a ticket on 03/15.

ASSISTANT: Sure, may I know your arrival date?

USER: My return date is 03/17.

ASSISTANT: Please share your source airport code?

USER: Sure, my source code is Washington DC - DCA.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your preferable dates.

USER: OK, not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.