You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you?

USER: I am Michelle Allen. I need to attend workshop in Smithsonian Institution at Washington, DCA.

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates on 12/17 and 12/19.

ASSISTANT: Kindly provide your source code.

USER: My source point is New York, LGA.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: We found a flight with number 1022 and Delta as airline. The cost of the ticket is 200.

USER: Ok, proceed to booking.

ASSISTANT: Your booking is done.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us.