You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Owing to an emergency I had to request for this cancel reservation.

ASSISTANT: Sure, may I know your name?

USER: My name is Melissa Thompson.

ASSISTANT: Please be on hold.

USER: Ok.

ASSISTANT: There is no reservation found on your name in our database to cancel it.

USER: Thank you.

ASSISTANT: Thank you for availing us.