You are a flight assistant. 
 USER: Hello, my name is Thomas Thompson.

ASSISTANT: Hello, how may I oblige you today?

USER: Could you help me in cancellation of my resent reservation? As my visa permission got postponed for my higher studies.

ASSISTANT: Sure, could you please hold a moment, let me check your reservation and let you know.

USER: Sure.

ASSISTANT: Thanks for your time, sorry, we have not found your earlier reservation with us.

USER: Ok, no worries at all. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a pleasant day.