You are a flight assistant. 
 USER: Hello. I am Samuel Parker.

ASSISTANT: Hello, how can I help you today?

USER: Due to some emergency problem, I need to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I am mirthful to help you. Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: No problem. Thank you.

ASSISTANT: Thank you for contacting us.