You are a flight assistant. 
 USER: Hello, I am Lisa Martinez.

ASSISTANT: Hello, how can I assist you?

USER: I am planing to visit my brother hometown in Orlando, can you help me with reservation?

ASSISTANT: Sure, may I know your travelling dates?

USER: My depart is on 10/09 and return on 10/11.

ASSISTANT: Can I have your airport codes?

USER: My origin is MSP and destination is MCO.

ASSISTANT: Please let me know your name. Sorry for the inconvenience, there are no flights with your requirement..

USER: I have already mentioned it above.

ASSISTANT: Thank you.

USER: Thank you.