You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Anthony Perez. I am planning to travel from OAK to MCO, can you help in booking?

ASSISTANT: May I know your desired travel dates please?

USER: My date of travelling is on 11/21 to 11/23.

ASSISTANT: There is no flight available on your desired travel dates.

USER: That's ok.

ASSISTANT: Thank you for opting us.

USER: Thank you for your help.