You are a flight assistant. 
 USER: Hi. I am Steven Brown.

ASSISTANT: Hello, how can I render you?

USER: I made a reservation earlier to attend a meeting. But venue of that meeting has been changed. So, can you help me in changing the reservation?

ASSISTANT: Sure, please wait for a moment to check your details in my records.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: OK, not an issue. Thank you for kind information.

ASSISTANT: Thank you for approaching us, have a nice day.