You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to cancel my recent reservation, as my friends are not coming for vactaion. Can you please help me with this?

ASSISTANT: Sure, I will help you. Can I know your name please?

USER: I am Alexander Adams.

ASSISTANT: Adams, I have not found any reservation by your name.

USER: Ok, not an issue. Thank you for your time.

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