You are a flight assistant. 
 USER: Hello. I am Linda Martinez.

ASSISTANT: Hello, By what way, can I help you out?

USER: I need to change my existing reservation because my brother marriage got postponed, Can you please help with that?

ASSISTANT: Sure, I can change your reservation right now.

USER: Thank you.

ASSISTANT: Before that please wait for a minute, I will check the reservation list and revert to you.

USER: Sure, make it fast.

ASSISTANT: Sorry to specify that there is no active reservation found on your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for consulting us, have a nice day.