You are a flight assistant. 
 USER: Hello. Is this Global travel agency?

ASSISTANT: Hello, Good Evening. Yes, it is Global travel agency only. How may I help you?

USER: My friend met with an accident, with whom I would like to travel to Dallas. can you help in cancelling my recent reservation?

ASSISTANT: Sure, I will help with that. Could I just have your name, please?

USER: Previously, I have reserved with the name of Betty Turner.

ASSISTANT: Betty Turner, your reservation has been cancelled successfully.

USER: Thank you for cancelling my reservation.

ASSISTANT: Do you want any other information from us?

USER: No, thank you with this provided information.

ASSISTANT: Thanks for contacting us, have a great day.