You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please check with my previous booking and help me with cancelling my reservation due to my health issues?

ASSISTANT: Sure, we are here to help you.

USER: Thank you for your response.

ASSISTANT: Can I have your name to proceed further?

USER: My name is Anthony Hall.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no reservation found with provided name.

USER: Oh! That's really disappointing to hear from your side. Anyways, thank you for checking.

ASSISTANT: Thank you for availing us.

USER: You are most welcome.