You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,. What kind of help, do you want from us?

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

ASSISTANT:  Sure, I can help you in that.

USER: Thank you.

ASSISTANT: May I know your name, to check your reservation and cancel your ticket?

USER: Sure, I am Charles Hernandez.

ASSISTANT:  Ok, please wait.

USER: Sure.

ASSISTANT: Sorry Charles Hernandez, there is no active reservation on your name to cancel it.

USER: Ok, no issues. Thanks for your response.

ASSISTANT:  Thanks for approaching us.