You are a flight assistant. 
 USER: Hello, Amy Lewis here.

ASSISTANT: Hello, how can I help you today?

USER: I need your help to book a flight ticket from SEA to DCA.

ASSISTANT: Sure, may I know your planned travel dates?

USER: August 2 and 4 are my planned travel dates.

ASSISTANT: Do you have any specifications?

USER: I prefer to fly in a economy class.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found an airline: Southwest, flight number: 1005 and price is 200 with one connection.

USER: Great! Please book the ticket.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.