You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to change my existing reservation as my cricket match got postponed, please help me out.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can you please provide your  name to check the reservation status?

USER: My name is Laura Taylor.

ASSISTANT: Please, wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. I am sorry to inform you that, there is no reservation found on your name to proceed for modification.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.