You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I  help you?

USER: Could you please help me to cancel my recent reservation as my trip got postpone due to bad weather conditions?

ASSISTANT: Sure, just a moment please.

USER: I made a reservation by this name Sarah Davis. Sure.

ASSISTANT: I am sorry no reservation found on your name.

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

ASSISTANT: Thank you for choosing us.