You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I render you today?

USER: Due to having the cancellation of my visa, I want to cancel my reservation. Could you aid me in this with the name of Melissa Wilson?

ASSISTANT: Sure, please wait a while I will check and get back to you.

USER: Sure, take your time.

ASSISTANT: Thanks for your time, unfortunately there are no reservation found on this name.

USER: No problem. Thank you for your information.

ASSISTANT: Thanks for approaching us.