You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, I would like to cancel my recent reservation. Will you help me with this?

ASSISTANT: Sure, may I know your name?

USER: My name is William Harris.

ASSISTANT: Thanks for providing your name. Please wait for a moment.

USER: Sure, I will wait for your information.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: Ok. not an issue. Thank you for providing information.

ASSISTANT: Thank you for choosing us.