You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Jason Collins, I want to cancel my recent reservation as my plan to meet my friend has got postpone due to bad health condition. Can you help me with cancellation?

ASSISTANT: Sure, please wait for a while.

USER: Ok. I will wait for your response.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER: No problem.

ASSISTANT: Thanks for choosing us.

USER: Thank you for helping me.