You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I want to cancel my reservation which is done recently due to some problems, can you please help me?

ASSISTANT: Sure, will you please mention your name please?

USER: Ok, my name is Donna Garcia.

ASSISTANT: Please give me a moment.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, your reservation is successfully cancelled.

USER: Ok, that's fine. Anyways, thank you for your service.

ASSISTANT: Thanks for reaching us, have a great day.