You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: I have to attend an event at Los Angeles, can you please help me to book the flight ticket from SEA to LAX?

ASSISTANT: Sure, can you please mention the travelling dates of your journey?

USER: Sure, I will depart on 03/19 and return on 03/21.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is a flight 1002 in southwest airline has the price 400. Can I proceed?

USER: That's good, you can book the ticket on the name of Gregory Smith.

ASSISTANT: Your booking is done, have a safe journey.

USER: Thank you very much.

ASSISTANT: You are welcome.