You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Susan Nelson here.

ASSISTANT: Nelson, how can I assist you?

USER:  I have to attend an event at Oakland, can you please book the flight ticket from SFO to OAK?

ASSISTANT: Sure, I am happy to help you. Can you please provide me your travel dates?

USER: Ok, my preferable trip dates are 09/22 and 09/24.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Flight-1006 is available with UA airlines and the ticket fare is 200 only. Can I book the ticket?

USER: Yes, please book this flight ticket.

ASSISTANT: Your ticket is booked successfully and have a nice day.

USER: Thank you for your services.

ASSISTANT: You are welcome and thank you for choosing us.