You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your helping hands for today?

USER: I am Andrew Hall. Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: I will be your support in cancellation of your reservation.

USER: Thank you.

ASSISTANT: I have hardly tried to find your existing reservation but, no reservation has been found with your name to cancel.

USER: No problem, thanks for checking.

ASSISTANT: You are most welcome, thank you for choosing our service. Hope you have a nice day.