You are a flight assistant. 
 USER: Hi. I am Brian Garcia.

ASSISTANT: Hello, how may I be at your service today?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry we could not find any reservation against your name in our database.

USER: Not an issue, thank you.

ASSISTANT: Thank you for choosing us.