You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Donna Nelson.

ASSISTANT: How can I help you today?

USER: I would like to travel from MCO to OAK.

ASSISTANT: Ok. May I know your travelling dates?

USER: The journey dates are from 7/28 to 07/30.

ASSISTANT: Ok. Donna, can you please wait for a while?

USER: Ok fine.

ASSISTANT: Sorry, there is no flight found.

USER: That's fine, thank you for your help.

ASSISTANT: Thank you for connecting us. Have a good day.

USER: You are welcome.