You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is William Jackson.

ASSISTANT: How can I assist you today?

USER: I have a meeting to attend at Los Angeles. Can you please help me in booking a ticket?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I prefer to travel on 04/28 and return on 04/30.

ASSISTANT: Please provide your airport codes that you want to travel.

USER: The respective airport codes are SFO and LAX.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, there is a flight with price 200 and the connections 0 is available. Shall I confirm your ticket?

USER: Please book the ticket.

ASSISTANT: Your ticket is booked. The flight number is 1009 and the airline is Frontier.

USER: Thank you for your service.

ASSISTANT: Welcome, have a great day.