You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please cancel my recent reservation? As my planned trip has been cancelled.

ASSISTANT: Sure, could I have your name please?

USER: Sure, my name is Rachel Johnson.

ASSISTANT: Ok, please allow me a moment.

USER: Sure, I'll wait for your response.

ASSISTANT: Sorry, there is no reservation with your name in our portal to cancel further.

USER: Oh! May be something went wrong while I was booking the ticket. Thank you anyways.

ASSISTANT: You are welcome, have a great day.