You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Gary Jackson.

ASSISTANT: How may I help you today Jackson?

USER: I want to cancel my reservation.

ASSISTANT: Sure, I will help you with that, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your patience, I could not find any reservation in our database.

USER: That's ok. Thank you.

ASSISTANT: It's my pleasure, have a great day.