You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Joshua Collins here.

ASSISTANT: What can I do for you today?

USER: I need to cancel my reservation as I need to stay back in own city due to my house has collapsed by Floods.

ASSISTANT: Joshua Collins, let me check with your existing reservation first before cancelling.

USER: Sure.

ASSISTANT: I'm so sorry Joshua Collins, we couldn't find any reservation by your name.

USER: It's ok, no issues.

ASSISTANT: Can I provide any other information to you?

USER: No, thank you for your information.

ASSISTANT: Feel free to choose our services again, thank you.

USER: Sure, thank you.