You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Sandra Baker. Owing an emergency,I would like to cancel my reservation. Help me with it.

ASSISTANT: Sure, we are glad to assist you. Please wait. i will check the reservation list with the airline data.

USER: Sure.

ASSISTANT: Thanks for your patience. Sorry to inform you that there was no reservation found on our name.

USER: Its ok, thank you for your response.

ASSISTANT: Thank you for availing us.