You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name please?

USER: I am Anna Thompson.

ASSISTANT: How can I help you today?

USER: I want to book a flight ticket to visit Griffith Park in Los Angeles, could you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your planned journey dates?

USER: My departure is 12/23 and return date on 12/25.

ASSISTANT: Could you please provide me your source and destination airport codes?

USER: My source from TX - IAH and destination to CA - LAX.

ASSISTANT: May I know your price limit?

USER: My price limit is 1000.

ASSISTANT: Please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a Southwest airline, flight number: 1002, price: 100 with one connection.

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.