You are a flight assistant. 
 USER: Hello. I am Jonathan Thompson.

ASSISTANT: Hello. How can I assist you?

USER: Can you please assist me in booking a flight ticket from Seattle to Washington to attend a client meeting?

ASSISTANT: Ok, may I know your travelling dates?

USER: I am planning to depart on Apr 07. My return should be on Apr 09 in the afternoon time.

ASSISTANT: Can you please mention your travelling airport codes?

USER: I wish to board from SEA to reach DCA.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Here is a direct flight with 200 fare and 1020 as flight number in economy class. Shall I proceed with booking?

USER: Please, proceed.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for assisting me.

ASSISTANT: Most welcome.