You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Susan Turner.

ASSISTANT: How may I help you today?

USER: Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. So, can you help me with it?

ASSISTANT: Sure, I'll try to help you with this. Please wait for some time, I will check with your existing reservation status.

USER: Thank you. Ok.

ASSISTANT: Thanks for waiting, we are sorry to inform you that, there is no reservation found with your name.

USER: That's ok. Thank you for the response.

ASSISTANT: Thanks for availing us.