You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service do you require from us?

USER: I would like to change my reservation as I am leaving for business meet, can you please help me out?

ASSISTANT: Sure, I am ready to help you in changing the ticket details. May I know your name please?

USER: Brenda King here.

ASSISTANT: Ok, can you please give me sometime to check the ticket status?

USER: Sure.

ASSISTANT: Sorry for the inconvenience, I haven't found any reservation with your name to change the ticket details.

USER: Ok no problem, thank you for checking.

ASSISTANT: Most welcome. Have a nice day.