You are a flight assistant. 
 USER: Hi. I am Jeffrey Davis.

ASSISTANT: Hello, how may I help you?

USER: My cricket match got postponed, can you please help me in changing the reservation?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.