You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Actually I am trying to modify the details in my previous ticket which is booked in the last week but due to some server problem I am not getting that. Can you please help me in changing?

ASSISTANT: Sure, I will help you with that. Can I have your  good name please to check your  reservation status?

USER: Thank you for considering my request. My name is Joseph Thomas.

ASSISTANT: Ok,  please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Joseph Thomas, no reservation has found under your name to change.

USER: It's ok, not a problem with that. Thank you for checking the ticket status.

ASSISTANT: Thank you for choosing us, have a  good day.

USER: Most welcome.