You are a flight assistant. 
 USER: Hello, I am Melissa Adams.

ASSISTANT: Hello, How can I help you?

USER: I want to cancel my trip due to an emergency. Can you aid me in cancelling my ticket?

ASSISTANT: Sure, Please wait a second.

USER: Take your time.

ASSISTANT: Sorry, No reservation found on your name.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for availing us.

USER: You are welcome.