You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you now?

USER: As my meeting was postponed. I need to cancel my recent reservation. Can you help me in that?

ASSISTANT: Ok, please mention your name so, I can be able to check with your previous booking.

USER: Myself Sandra Williams.

ASSISTANT: Give me a moment to check with availability.

USER: Ok.

ASSISTANT: Sandra Williams, there is no reservation found in the reservation list.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for checking.