You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am planning to visit Joaquin miller park with my grandchildren. Could you help me to book the ticket from LGA to OAK?

ASSISTANT: Sure, can I know the travel dates please?

USER: I am travelling on 01/29 and on 01/31. My price limit is 200.

ASSISTANT: May I know your name please?

USER: Frank Martin here.

ASSISTANT: Frank, there is a flight for you as per your request. Shall I book it?

USER: Please book my ticket.

ASSISTANT: I have booked your ticket with flight number 1001 and airline is Spirit.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us, have a safe journey.