You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my reservation due to sudden change in my trip, can you assist me?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Jonathan Martin.

ASSISTANT: Ok, wait for some time I will  check and get back to you.

USER: Sure.

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

USER: No problem, thank you for searching.

ASSISTANT: Thanks for approaching us.