You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Collins.

ASSISTANT: Collins, how may I assist you today?

USER: I booked a ticket last week, but i am not interested to go for trip right now. Will you please cancel my recent reservation?

ASSISTANT: Ok, I will help you. But I did not found any reservation with your name.

USER: Ok, thank you for the information you have given.

ASSISTANT: It's my pleasure Deborah Collins.