You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,. How can I assist you?

USER: Owing to an emergency I need to cancel my recent reservation.

ASSISTANT: Ok, may I know your name please?

USER: I am Thomas White.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Sorry, no reservation exists in your name.

USER: Thanks for the assistance.

ASSISTANT: Thank you.