You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Laura Johnson.

ASSISTANT: How may I assist you at this moment?

USER: I want to attend my parent's wedding anniversary party at Seattle, so please book my ticket from Houston.

ASSISTANT: Sure, I am here to help you to book a flight ticket but I need your travel dates to search available flight.

USER: My trip dates are 06/12 to 06/14.

ASSISTANT: May I know your travelling airport codes?

USER: My source is IAH and destination is SEA.

ASSISTANT: Wait for a minute.

USER: Sure.

ASSISTANT: I found a direct flight with price 100, shall I proceed?

USER: You can reserve it.

ASSISTANT: Your ticket has been booked with flight-1020.

USER: Thank you.

ASSISTANT: My pleasure.