You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Patricia Lewis.

ASSISTANT: How can I assist you today?

USER: I want to cancel my recent reservation owing an emergency. Can please you help in that?

ASSISTANT: Sure, please wait for a moment, I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting.

USER: Thank you for your service.

ASSISTANT: Sorry, there is no reservation found with your name.

USER: Ok, thank you.

ASSISTANT: Thank you for choosing us.