You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to modify the return journey date in the flight ticket which is booked previously because I have planned for the trip for some more days. Can you please help me to change the details?

ASSISTANT: Sure, I am happy to help you in changing the ticket details. Can you please tell me your full name to check your ticket status?

USER: Thank you for accepting us. I am Kenneth Phillips.

ASSISTANT: Ok, please give me a minute. I will check the ticket status and let you know the status.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to inform you that, there is no active reservation found with your name in our portal to change the details.

USER: That's fine, no problem. Thank you for your information.

ASSISTANT: You are most welcome. Thank you for approaching us.