You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to visit Griffith park. Could you book a ticket from DFW to LAX? My price limit is 200.

ASSISTANT: Sure, can I know the dates of travel?

USER: I am  travelling on 07/28 and 0730.

ASSISTANT: UA airlines flight 1000 matches with your preferences, can I proceed?

USER: Please proceed.

ASSISTANT: Can I know your name for booking purposes?

USER: Christine Martin here.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you, have a safe flight.