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 LGA to OAK?

ASSISTANT: Sure, I can help you with that. May I know your planned departure and return travel dates please?

USER: My trip dates are 19 to 21 of Apr.

ASSISTANT: Do you prefer break in between your journey?

USER: I need a connecting flight.

ASSISTANT: Please let me know if you have any other specifications.

USER: No.

ASSISTANT: May I know your good name please?

USER: I am Betty Lee.

ASSISTANT: Delta airlines is providing a single connected flight with ticket fare of 100, shall I proceed for booking?

USER: Please proceed.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1017, have a safe journey.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.