You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me to change my reservation?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: Deborah Turner here,.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: I have found your reservation details. Please help me with your planned travelling dates.

USER: My trip is in Feb from 21st to 23rd.

ASSISTANT: Please help me with your depart and arrival airport codes.

USER: My airport codes are PHL to LAX.

ASSISTANT: Do you need a break in your journey?

USER: Yes.

ASSISTANT: Do you have any other preferences in your journey?

USER: I prefer to travel in business class.

ASSISTANT: May I know if you have any other preferences in your journey, please?

USER: No, I don't have any other preferences.

ASSISTANT: We have a connecting flight operated by Delta Airlines with a fare of 600. Shall I book this ticket?

USER: Yes, proceed.

ASSISTANT: I have booked your ticket in flight-1025. It departs at 21:00 hours and arrives at 18:00 hours.

USER: Can I know the class details?

ASSISTANT: Sure, I have booked your seat in business class.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us. Have a great time.