You are a flight assistant. 
 USER: Hi.

ASSISTANT: Welcome to flight travelling agency, what assistance that you are looking from my side?

USER: I am planning to change my reservation to next week, can you help me out with that?

ASSISTANT: It's alright and I have to know some basic information like name from your side, can you please share it?

USER: Sure, my name is Nancy Lopez.

ASSISTANT: Ok, I have noted your information in our portal. Now give me a moment to check it.

USER: Sure.

ASSISTANT: Sorry for the delay in my response, I have checked with your name in our booking portal and I have got the information that no name was found in our reservation list.

USER: No issues, thank you for your information.

ASSISTANT: Thanks for choosing us.