You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER:  I want to cancel my reservation as my project got ramp down. Can you help me with that?

ASSISTANT:  Let me know your name to check your reservation?

USER: I am Alexander Smith.

ASSISTANT: : I am sorry to say you that there is no reservation found under your name in our database.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.