You are a flight assistant. 
 USER: Hello, My name is David Brown.

ASSISTANT: Hello, how can I help you ?

USER: I have made a plan to attend my cousin birthday party at New York. Can you help me, To book a ticket from CA - SFO to NY - EWR?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates?

USER: My travel dates are from 08/15 to 08/17. My price limit is 200.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: My connections limit has to be 1. Sure, I will wait for you response.

ASSISTANT: Sorry to tell that there is no flight found on your request.

USER: OK. Thank you, For helping me.

ASSISTANT: Thank you for approaching us.