You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to meet my parents to celebrate their wedding anniversary. Could you book my ticket from OAK to EWR?

ASSISTANT: Sure, I am glad to help you in booking the flight ticket. May I know your travel dates?

USER: My trip dates are 10/12 and 10/14.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a connecting flight is available and airfare is about 400. Shall I proceed further in booking?

USER: I can afford 200 for my ticket.

ASSISTANT: May I know your name.

USER: My name is Margaret Nelson.

ASSISTANT: Sorry Nelson as per your price limit there are no flights available.

USER: No problem, I will find an alternative way to travel.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.