You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Sarah Thomas. I want you to book my flight ticket from SEA to OAK as I have to meet my grandfather at Oakland, can you please do that for me?

ASSISTANT: That's fine, may I know your travel dates?

USER: I will depart on 09/20 and return back on 09/22.

ASSISTANT: There is a flight-1020 with connection 1 and price 100 of Southwest airline. Is it fine for you?

USER: Yes, you can book the ticket.

ASSISTANT: Ok, your ticket reservation is done with your name Sarah Thomas.

USER: Thank you very much for your help.

ASSISTANT: Welcome.