You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER:  I am Joshua Thomas want to cancel my reservation due to an emergency at home.

ASSISTANT: Ok, please stand by I will get back to you.

USER:  Ok.

ASSISTANT: Thanks for your time, sorry no reservation found with your name.

USER: Ok, thank you for your response.

ASSISTANT: Thank you for reaching us, have a nice day.