You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your good name?

USER: I am Joseph Perez.

ASSISTANT: How can I help you?

USER: Actually I book a ticket for wrong flight, can you help in cancel my reservation?

ASSISTANT: Perez, wait a while I will check your details and I will be back.

USER: Sure.

ASSISTANT: Perez, no reservation found with your details.

USER: That's fine.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Thank you for your help.