You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I provide assistance to you today?

USER: Could you please help me to cancel my recent reservation as my plan to meet my grand parents got post pone?

ASSISTANT: Sure, I will help you with that. Let me know your name to check your reservation?

USER: I made a reservation by this name Rachel Roberts.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, not an issue. Thank you for your information,.

ASSISTANT: Thank you for reaching us.