You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, which service you are looking for?

USER: I am Donna Phillips.

ASSISTANT: Hope you are doing well.

USER: I am looking for a ticket cancellation services. Can you help me with that?

ASSISTANT: Yes, we are providing cancellation service.

USER: Happy to hear that from you. Please cancel my recent reservation.

ASSISTANT: Phillips, in our listing I don't find any reservation on your name.

USER: Oh! not an issue. Thank you for your time.

ASSISTANT: Thank you for choosing us. Hope you have a great day a head.