You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Donna Campbell here. I want to attend a Seminar in Oakland. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travelling dates are from 07/20 to 07/22.

ASSISTANT: Ok, may I know your location airport codes?

USER: My airport codes are from SFO to OAK.

ASSISTANT: The AA airline with flight number 1000 is available having fare as 100 and connection as 1.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us, have a great day.