You are a flight assistant. 
 USER: Hi. I am Helen Smith.

ASSISTANT: Hello, how may I be of your assistance?

USER: I want to book a flight ticket from CA-OAK to CA-SFO. Can you help me?

ASSISTANT: Sure, please let me know if you need a lay by in the middle of your journey.

USER: I need a connecting flight.

ASSISTANT: On what dates are you willing to make your trip?

USER: 06/26 and 06/28 are my travelling dates.

ASSISTANT: How much amount can you spend for your ticket?

USER: 500 is my fare.

ASSISTANT: Delta airline is going on your way and the cost of ticket is 200.

USER: You can reserve it.

ASSISTANT: We have you booked on flight 1024. You can collect your ticket at the time of check - IN.

USER: Thank you.

ASSISTANT: Thank you for picking us.