You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you today?

USER: Please assist me to cancel my recent reservation as my interview got postpone due to technical issues.

ASSISTANT: Sure, we can help with us.

USER: Thank you.

ASSISTANT: Please share your good name?

USER: I am David Smith.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thank you for your time there is no recent reservation found with the given name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you.