You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to do some changes in my existing reservation. Can you help me for that?

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

USER: My name is Benjamin Baker.

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

USER: My travelling dates are Jan 02 and Jan 04.

ASSISTANT: Please help me with your source and return airport codes.

USER: My travelling airport codes are from HOU to CLT.

ASSISTANT: Do you need a break in your journey.

USER: I need a one break in my journey.

ASSISTANT: Please let me know if you have any other preferences in your journey.

USER: My airline preference is normal cost.

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

USER: No.

ASSISTANT: Please allow me a minute.

USER: Ok.

ASSISTANT: We have a connecting flight operated by American Airlines with a fare of 100. Is it ok for you?

USER: Ok.

ASSISTANT: I have a booked your ticket in flight-1018. It departs at 3 AM and arrives at 1 AM.

USER: Thank you for booking.

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