You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Melissa Martinez here. I am sick, so can you help me with cancellation of my previous booking?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok, I will be waiting for your response.

ASSISTANT: Melissa, I found your reservation and successfully cancelled your reservation.

USER: Oh! That's fine. Thank you for cancelling my booking.

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

USER: You are most welcome.