You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my existing reservation due to bad health issues, can you help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: I am Jeffrey Smith.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, I found your reservation in our system data. Please share me your source and destination airport?

USER: My airport codes are LAS to AUS.

ASSISTANT: Please mention your new travelling dates?

USER: My trip dates are Apr 01 and Apr 03.

ASSISTANT: Do you want a connecting flight for your journey?

USER: I need a break in between my journey.

ASSISTANT: Is there any other requirement?

USER: I want to travel in economy class flight.

ASSISTANT: I found a connecting flight 1005 of airline Frontier, fare is 100 and class is economy. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for visiting us, have a nice journey.