You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Andrew Allen, I want to cancel my ticket as my plan to meet my sister is cancelled due to my bad health. Can you help me with that?

ASSISTANT: Sure, I am willing to help you. Please stand by.

USER: Sure.

ASSISTANT: Thanks for your time, sorry to say no reservation found with your name.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for reaching us, have a nice day.