You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, may I know your name?

USER: My name is Christopher Garcia.

ASSISTANT: Please wait.

USER: Sure I will wait for your response.

ASSISTANT: Sorry, there is no active reservation on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you.