You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Brenda Mitchell.

ASSISTANT: How may I assist you today?

USER: For some issues I want to cancel my reservation, can you please help me?

ASSISTANT: Sure, please wait for a minute I will check the reservation details.

USER: Sure.

ASSISTANT: Mitchell, I cannot find any reservation with you name.

USER: It's ok. Thank you for the information.

ASSISTANT: It's my pleasure.