You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, can you please tell me how can I assist you?

USER: Due to some issues in my office, I am unable to travel to my home town which I was planned in my weekend, so can you please change my booking?

ASSISTANT: Ok, sure can you please tell me your name?

USER: Yes, my name is Karen Campbell.

ASSISTANT: Ok, please wait. Sorry Campbell, no reservation found with your name.

USER: Ok, thank you for your help in checking with that.

ASSISTANT: Most welcome.