You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me to book a flight ticket from DFW to OAK?

ASSISTANT: Sure, we are happy to help you. Can I have your travelling dates?

USER: My travel dates are Oct 12 and Oct 14.

ASSISTANT: Do you prefer any break in between journey?

USER: I prefer direct flight for this trip.

ASSISTANT: Is there other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Sarah Phillips.

ASSISTANT: We found a direct flight in Frontier airline with a fare of 100 which departs at 23:00 and return at 15:00. Shall I proceed for booking?

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1002.

USER: Thank you.

ASSISTANT: Thank you for availing us.