You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Donna Wilson, I would like to book a flight ticket to  Washington DC - DCA to attend a meeting. Will you help me in that?

ASSISTANT: Sure, I will be here to help you.

USER: Thanks.

ASSISTANT: Can you please share me your boarding point?

USER: My boarding point is Seattle, WA - SEA.

ASSISTANT: Let me know your afford for flight ticket.

USER: I can spend up to 200.

ASSISTANT: May I know when would you like to depart and arrive?

USER: I would like to depart on 08/12 and arrive on 08/14.

ASSISTANT: Please give me a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: We found a flight with an airline Delta of flight 1022 and cost is 200. Shall I book it for you?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.