You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christopher Wright.

ASSISTANT: Wright, how may I help you?

USER: I need to cancel my reservation, as my interview is postponed. Can you help me?

ASSISTANT: Sure, I am glad to help you. Please give me a moment to check our website.

USER: Ok.

ASSISTANT: Sorry, no reservation is found by your name.

USER: No issue, thank you for your time.

ASSISTANT: Thank you for choosing us.