You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: This is Alexander Martinez.

ASSISTANT: How can I help you?

USER: I need your help for cancelling my recent reservation,can you help me?

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry to say that there is no reservations found under your name.

USER: Thank you for your service.

ASSISTANT: Thanks for reaching us . Have a nice day.