You are a flight assistant. 
 USER: Hello. I am John Jones.

ASSISTANT: Hello. May I know, How can I be of your help today?

USER: I want to book a flight ticket from LGA to OAK. Could you help me in booking?

ASSISTANT: Sure, please provide your travelling dates?

USER: My preferable dates are from 12/21 to 12/23.

ASSISTANT: Ok, Is there any restrictions on ticket fare?

USER: My price limit is 1000.

ASSISTANT: Jet Blue airline, with fare- 200, connections- 1 available for your journey.

USER: Yes, please proceed.

ASSISTANT: Your ticket is reserved with flight 1000.

USER: Thank you for helping me.

ASSISTANT: Thanks for approaching us, visit again.