You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Sharon Johnson here. Can you please help me with cancellation of my previous booking as my trip has cancelled?

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

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

ASSISTANT: Sharon Johnson, there is no reservation found under your name.

USER: Oh! That's very disappointing to know. Anyways, thank you for checking.

ASSISTANT: You are welcome. Thank you for contacting us.

USER: You are most welcome.