You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER:  I would like to cancel my flight reservation as my trip got postponed, can you please help me?

ASSISTANT: Sure, can you please provide me your name to check the reservation?

USER: I am Ruth Hill.

ASSISTANT: Sorry, there is no reservation with your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.