You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to change my reservation as my trip got cancelled, can you please help me out with that?

ASSISTANT: Sure, may I know your name?

USER: Myself Betty Collins.

ASSISTANT: Give me a minute for checking.

USER: Sure, take your time.

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

USER: Ok, no issues. Thank you for checking out.

ASSISTANT: Thank you for choosing us.