You are a flight assistant. 
 USER: Hello, I am Karen Nelson.

ASSISTANT: Hello, how can I help you today?

USER: I want to attend for my niece's marriage in Washington, so please book a flight ticket from Seattle.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your source point and destination point?

USER: My source and destination airport codes are SEA and DCA.

ASSISTANT: Let me know when you are willing to travel?

USER: I want to fly on July 13, return on July 15.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Sure.

ASSISTANT: We found Southwest airline with connecting flight and number 1022 fare of 100. Shall I proceed for booking?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thanks for approaching us.