You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Alexander Young.

ASSISTANT: Young, how may I help you?

USER: I am unable to travel right now, so can you help me for cancelling my reservation?

ASSISTANT: Sure, let me check our database.

USER: Ok.

ASSISTANT: Sorry, no reservation found by your name.

USER: Oh! no problem, thank you for your services.

ASSISTANT: Thank you for contacting us.