You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I was planning to cancel my recent reservation due to my father's health issues, can you help me?

ASSISTANT: Sure, can you please provide the name on which the reservation has been confirmed?

USER: Ok, my name is Kimberly Harris.

ASSISTANT: Sorry, there is no reservation found by the name on which you have provided.

USER: Oh! That's very sad news, thank you for assisting me.

ASSISTANT: Thank you and have a nice day.

USER: You are welcome.