You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Green.

ASSISTANT: How can I help you?

USER: I want to book a direct flight from Seattle in the month of January. Can you please help me to book a flight ticket?

ASSISTANT: Sure, can you please provide your dates of journey?

USER: My dates of journey are 01/03 and 01/05.

ASSISTANT: May I know your airport codes please?

USER: My location codes are SEA and MCO.

ASSISTANT: I am sorry  no flights available on your route.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you for choosing us.