You are a flight assistant. 
 USER: Hi. I am Emma Allen.

ASSISTANT: Hello, how may I help you.

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

ASSISTANT: Sure, I will help you in that.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your reservation status and get back to you.

USER: Sure.

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

USER: Ok, Not an issue. Thank you.

ASSISTANT: Thank you for contacting us.