You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, please let me know your name first?

USER: Mary Adams here.

ASSISTANT: Ok Adams, how may I assist you?

USER: Due to health problem, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I will search for your recent reservation.

USER: Ok.

ASSISTANT: Sorry to inform you Adams, I didn't found any reservation with your name in our database.

USER: Ok, thank you for the information.

ASSISTANT: You are welcome. Thank you for consulting us. Have a good day.