You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: Can you please help me out in cancelling recent reservation? As my planned trip has been cancelled.

ASSISTANT: Sure, I can help you. May I know your name?

USER: Sure, My name is Charles Davis.

ASSISTANT: Please wait a while.

USER: Sure, Take your time.

ASSISTANT: We didn't found any reservation by this name.

USER: Oh! May be I have done wrong reservation, anyways thank you.

ASSISTANT: Thank you for choosing us.