You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, may I know your name?

USER: Sure, My name is Deborah Lewis.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for choosing us.