You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Dorothy Baker.

ASSISTANT: How may I abet you today?

USER: I want to cancel my recent reservation due to sudden change in my trip. Can you help me with this cancellation?

ASSISTANT: Sure, please wait for a while.

USER: OK.

ASSISTANT: There is no reservation found on your name.

USER: No issue. Thank you for the information.

ASSISTANT: Thank you for availing with us.