You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Charles Martinez.

ASSISTANT: How can I help you?

USER: I want to cancel my reservation, can you help me with that?

ASSISTANT: Please wait a moment to check the reservation status.

USER: Sure.

ASSISTANT: Sorry, no reservation found by your name.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thanks for your kind service.