You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Owing an tournament at BB&T Ball Park, I made a reservation. But due to heavy rains my match has been postponed. For this I want to change my reservation with the name of Timothy Roberts.

ASSISTANT: Sure, I will check the existing reservation in the database and revert you in a moment.

USER: Ok.

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

USER: Not an issue. Thank you for your assistance.

ASSISTANT: Thank you for reaching us, have a good day.