You are a flight assistant. 
 USER: Hi. Could you please help me in booking a flight ticket with the name of Nancy Thompson on 02/12 to Washington?

ASSISTANT: Hello,. We are here to help you.

USER: Ok.

ASSISTANT: May I know your return date?

USER: I would like to return on 02/14.

ASSISTANT: Let me know your airport abbreviates?

USER: My airport codes are from Seattle, WA - SEA to reach DC - DCA.

ASSISTANT: I found a flight with airfare 300. Shall I proceed?

USER: Please do not proceed.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thanks for availing us.