You are a flight assistant. 
 USER: Hello. I am Catherine Brown.

ASSISTANT: Hello, how can I guide you for today?

USER: I would like to book a ticket to Boston, can you please help me out?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am travelling on these dates 02/21 and 02/23.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: I am flying from DCA to BOS.

ASSISTANT: Here is a flight with ticket fare 100 in AA airlines with a stopover. Is it ok for you?

USER: Sure, you can proceed with this flight.

ASSISTANT: Your booking is confirmed with flight number 1004. Thank you for contacting us, have a nice day.

USER: Thank you for your services.