You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my recent reservation due to sudden change in my trip.

ASSISTANT: Ok, On which name you made the reservation?

USER: I am Christine Martinez.

ASSISTANT: Please give me a minute.

USER: OK.

ASSISTANT: There is no reservation found with your name.

USER: OK. Thank you.

ASSISTANT: Have a nice day!.