You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: As I am a scientist, I want to attend science festival with my students at Atlanta. Can you do the reservation?

ASSISTANT: Sure, may I know your destination and source code?

USER: My airport codes are SFO-ATL.

ASSISTANT: When do you what to travel?

USER: Dates are 12/22 and 12/24.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: We found a flight on Delta airline, flight number 1009 with the fare of 100.

USER: Please do the booking.

ASSISTANT: Your ticket has been booed.

USER: Thank you so much.

ASSISTANT: Thank you for availing us.