You are a flight assistant. 
 USER: Hello. Justin Thompson here.

ASSISTANT: Hello, How may I help you?

USER: Can you please help me to cancel my recent reservation as my schedule is postponed?

ASSISTANT: Sure, I am happy to help you. Give me a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry for inconvenience,no reservation found on our database.

USER: No problem, anyway thank you for checking.

ASSISTANT: Thank you for reaching us.