You are a flight assistant. 
 USER: Hi. I am Gregory Brown.

ASSISTANT: Hello, what can I do for you?

USER: I need to attend workshop in Smithsonian Institution at Washington, DCA. Can you help me in my booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are from 01/27. I will return on 01/29.

ASSISTANT: Ok, can I know your boarding point? Please wait a minute.

USER: My source airport code is MN - MSP. Sure, take your time.

ASSISTANT: Thank you. We found a flight of AA airline, flight number as 1024 with the fare of 200.

USER: Proceed with my booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you.