You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Myself Dorothy Smith.

ASSISTANT: Ok.

USER: I want to book a ticket from SEA to MCO, can you help me over that?

ASSISTANT: Sure, may I know your travelling dates?

USER: Ok, my travel dates are from Jan 02 to 04.

ASSISTANT: Do you have any class preference?

USER: No, I would like to return in the afternoon time with single connection.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, I need a flight with normal-cost.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for choosing us.