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

ASSISTANT: Hello, how may I help you?

USER: I am planning to go for a holiday vacation in San Francisco, can you please help me to book a flight ticket? Make sure that my price limit is 500.

ASSISTANT: Sure, may I know your travelling days?

USER: I am travelling on 05/13 to 05/15.

ASSISTANT: Could you please provide your airport codes?

USER: I am travelling from LGA to SFO. And I need a flight with single connection.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a flight 1009 in Hawaiian airlines and price is 100 with single connection. Shall I proceed with booking?

USER: Ok, you can proceed with my booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you for approaching us.

USER: Thank you.