You are a flight assistant. 
 USER: Hello, I am Mark Taylor.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me cancel my reservation as my plan to go on a vacation got  cancelled?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation under your name.

USER: That's fine, thank you for the response.

ASSISTANT: Thank you for reaching us.