You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I want to change my flight reservation as I am unwell, can you please help me?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Jack Walker.

ASSISTANT: Thanks for your name, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, we are happy to inform you that we found a reservation on your name. Can you please share your new journey dates?

USER: I would like to depart on Feb 15th and return back on Feb 17th.

ASSISTANT: Ok, please mention your airport codes.

USER: I would like to travel from EWR to DFW.

ASSISTANT: Is there any connection limit?

USER: I prefer for a single connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: As per your information, we found a connecting flight with a fare of 100 in 1027 Frontier Airline.

USER: Please proceed.

ASSISTANT: Ok, your ticket has been changed successfully.

USER: Thank you very much.

ASSISTANT: Thank you for choosing us.