You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Eric Clark.

ASSISTANT: How can I assist you today?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Sure.

ASSISTANT: Eric Clark, there is no reservation found under your name.

USER: No problem, thank you for the information.

ASSISTANT: You are welcome. Thank you for contacting us.