You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you please book a flight ticket from MCO to SFO?

ASSISTANT: Sure, I am here to help you with that. May I know your preferable travel dates?

USER: Thank you. I have planned my travel dates as Jan 01 and Jan 03.

ASSISTANT: Do you have any class preference?

USER: I would prefer economy class.

ASSISTANT: May I know your name please?

USER: Sure, myself Susan Roberts.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart in afternoon time so please check with that.

ASSISTANT: There are no flights found on this route as per your travel dates.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Most welcome.