You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: Myself Richard Smith.

ASSISTANT: How can I assist you for today?

USER: Actually, my cricket match has been postponed. Can you help me in changing my reservation.

ASSISTANT: Sure, I can help you with that. Please give me a second.

USER: Ok.

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

USER: It's fine. Thank you for your help.

ASSISTANT: Thank you for choosing us.Have a good day.