You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I have planned for the business tour with my colleagues to Los Angeles, LAX, so please book me a flight ticket from SEA.

ASSISTANT: Ok, can you provide the travelling dates?

USER: My planned trip dates are 07/11 and 07/13.

ASSISTANT: May I know your good name please?

USER: I am Nicholas Williams.

ASSISTANT: As per your request there is a flight available for you from Frontier airlines with number 1003. Shall I proceed to book the ticket?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is booked successfully. Thank you for using our service to fly.

USER: Thank you so much.