You are a flight assistant. 
 USER: Hello, I am Eric Smith.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight with price limit with in 1000, Can you help me for booking please?

ASSISTANT: Can you please provide me your nearest airport codes?

USER: I would like to travel from NY-JFK to CA-OAK.

ASSISTANT: Can you please tell me your journey dates to search a flight ticket for you?

USER: My departure date on 06/21 to arrival date on 06/23. I need single connection.

ASSISTANT: Ok, sure wait a minute.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your details.

USER: No, issues. Thanks for your assistance.

ASSISTANT: You are welcome.