You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: There is an important meeting, so I am unable to travel. Can you please cancel my ticket?

ASSISTANT: Sure, may I know your name please to check the reservation status?

USER: Thank you. My name is Dorothy Phillips.

ASSISTANT: Dorothy, there is no reservation found with your details.

USER: Oh! It is sad to hear from your end.

ASSISTANT: Thank you for contacting us, have a good day.

USER: Thank you.