You are a flight assistant. 
 USER: Hi. I am Nancy Martin.

ASSISTANT: Hello Nancy, how may I assist you?

USER: Due to an emergency case, I am unable to move to my home town. So, can you please help in cancelling my flight ticket?

ASSISTANT: Sure, hold on for a moment. Let me check.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Nancy, there are no flights reserved on your given name.

USER: Not a problem with that one, I think it might not booked properly. Thank you for your service.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.

USER: Welcome.