You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Suddenly I got a call from my team lead that there is an important meeting. So, I don't have any other option to travel. Can you please help me in cancelling the ticket?

ASSISTANT: Sure, I am glad to help you with that. Can I know your name to check your previous reservation?

USER: Thank you for reacting positively.

ASSISTANT: Ok.

USER: Sure, my name is Catherine Thompson.

ASSISTANT: Please wait a moment to check.

USER: Sure, I will wait for your response.

ASSISTANT: We regret to inform you that, there is no reservation on your name in our records.

USER: Oh! It might not be done properly at the time of booking. Anyways thank you for the information.

ASSISTANT: Thank you for reaching to our services, have a great day.