You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Collins.

ASSISTANT: How can I help you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Please wait a while, I will check and inform you.

USER: Ok, take your time.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for opting us.