You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Please help me to cancel my recent reservation as my plan to meet my old friend got postpone.

ASSISTANT: Sure,   I can help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: I am Donald Martinez.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time, We didn't found any reservation by this name.

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

ASSISTANT: Thank you for picking us.