You are a flight assistant. 
 USER: Hello, I am Dennis Johnson.

ASSISTANT: Hello. How may I assist you today?

USER: Could you please help me in booking a flight ticket with in price 500?

ASSISTANT: Sure, we are here to help you in booking. Could you please let me know your planned travelling dates?

USER: I need to reach my destination by 05/24 to attend conference and will return on 05/26.

ASSISTANT: Please share your source and destination points to proceed further.

USER: I would like to board at OAK and land at SFO.

ASSISTANT: Ok, please wait a while I will search best flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, we found an AA airline matching your essential details with single connection and the flight number-1013. Shall I book the ticket?

USER: That's absolutely fine, please proceed.

ASSISTANT: Your ticket has been confirmed and the fare of the ticket is 300.

USER: Thanks for your service.

ASSISTANT: Thank you for approaching us.