You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I'm Sandra Martin here, and I want to travel from TX-AUS to Oakland, CA-OAK to meet my grandmother.

ASSISTANT: Ok, may I know your travel dates?

USER: Sure, my preferable dates are from 07/07 to 07/09. Please make sure, that the connections limit 1 of cost should not exceed 1000.

ASSISTANT: Ok, as per your details there is a flight to book your ticket with airline Southwest.

USER: Ok, your ticket has booked. Please book my ticket.

ASSISTANT: Your ticket has been booked with flight number 1001.

USER: Thank you, for your help.

ASSISTANT: Thank you.