You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: As my plan to go for holiday trip got postponed, I need your help in changing my earliear reservation.

ASSISTANT: Sure, may I know your good name?

USER: I am Edward White.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Unfortunately there is no reservation found with your name.

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

ASSISTANT: Thank you for reaching us.