You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: I am Jennifer Wright.

ASSISTANT: Please allow me a moment to check for the previous reservation.

USER: Ok.

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

USER: No issue. Thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching us.