You are a flight assistant. 
 USER: Hello,. I am Samantha Walker.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my ticket, because my friends cancelled the tour due to some problem.

ASSISTANT: Ok.

USER: Can you please help me with that?

ASSISTANT: Sure, please wait.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.