You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Frank Anderson.

ASSISTANT: How may I render you today?

USER: Please, help me in cancelling my reservation.

ASSISTANT: Sure, please wait for few minutes.

USER: Sure.

ASSISTANT: There is no recent reservation found on your name.

USER: Ok, thank you.

ASSISTANT: Thank you for choosing us.