You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Joseph Mitchell here.

ASSISTANT: How may I help you?

USER: Can you reserve a flight ticket to Los Angeles?

ASSISTANT: Sure, please mention your trip dates to go.

USER: My travel dates for the journey would be 09/29 to 10/01.

ASSISTANT: Can I have your airport codes Joseph Mitchell?

USER: Sure, my airport codes for boarding the flight would be ORD to LAX.

ASSISTANT: There is a flight-1003 on Frontier airline, is it fine for you?

USER: I need a direct flight to visit Los Angles.

ASSISTANT: Ok, let me check.

USER: Sure.

ASSISTANT: Happy to inform you, there is a flight-1007 on Frontier airline. Shall I proceed?

USER: That's good. You can go ahead and book the flight ticket.

ASSISTANT: Ok, your ticket has been done with your name.

USER: Thank you.

ASSISTANT: Welcome, have a happy journey.