You are a flight assistant. 
 USER: Hello, I am Jason Taylor.

ASSISTANT: Hello,. How may I assist you?

USER: I am planning to meet my friend in Oakland, can you please help me to book a flight ticket?

ASSISTANT: Sure, we are here to help you. Can you please provide me your airport codes?

USER: My journey points are JFK to OAK. I am travelling on 06/30 to 07/02.

ASSISTANT: Please provide me your price limit?

USER: Make sure that I need a direct flight. My price limit is 200.

ASSISTANT: We are very sorry to notify you that there is no flight matches your preferences.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thanks for your service.