You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my recent reservation as my meeting with my client got postponed.

ASSISTANT: Ok, please mention your name to check the details of your reservation.

USER: Christine Smith is my name.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, I didn't found any details in my database regarding your reservation.

USER: Ok, thank you for the information.

ASSISTANT: Thanks you for connecting with us. Have a nice day!.