You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to visit mountain view cemetery, will you book a ticket under the name of Barbara Smith?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Barbara, may I know your location points please?

USER: It is a round trip and the airport code is OAK.

ASSISTANT: Do you have any price limit?

USER: Yes, It should not exceed 500.

ASSISTANT: May I know on which date you would like to travel?

USER: I would like to start on 08/11. My return will be on 08/13.

ASSISTANT: Ok Barbara, let me check with the availability.

USER: Ok.

ASSISTANT: Luckily there is a flight with price of 100 from AA airline, can I book it for you?

USER: Yes, you can.

ASSISTANT: Your ticket is reserved in flight number 1002.

USER: Thank you.

ASSISTANT: Have a safe journey. Thank you for choosing us.