You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rachel Brown here.

ASSISTANT:  How can I assist you?

USER: I need to cancel my reservation, as my planned trip with my friends got cancelled. can you please help me out?

ASSISTANT: Ok, please wait I will revert you in a moment.

USER: Thank you for considering my request.

ASSISTANT:  Thanks for waiting, sorry to inform you that no reservation was found on your name in our data base.

USER: Not a big problem, anyway thank you for the information.

ASSISTANT:  Thank you for availing us.

USER: Thank you for your help in searching.