You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Due to heavy rains my trip got postpone, so I need to cancel my resent reservation. Can you help me with this?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: I am Justin Lewis. Ok.

ASSISTANT: Sorry Justin Lewis, there is no reservation on your name.

USER: Ok, not an issue.

ASSISTANT: Thank you.

USER: Thank you for your information.