You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide service to you?

USER: Could you please help me to cancel my recent reservation as my plan to meet my grand parents got postpone due to technical issues?

ASSISTANT: Sure, may I know your name to check the reservation?

USER: I am Donald Perez.

ASSISTANT: Please wait, I will check the reservation in the database and get back to you.

USER: Sure.

ASSISTANT: Sorry, we couldn't find a reservation on your name to cancel.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for contacting us.