You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I have to cancel my flight ticket booking on my name Jacob Mitchell, can you help me?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Sure.

ASSISTANT: We regret that, there is no reservation with your name in our records.

USER: No problem, thank yo for your information.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Welcome.