You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, I will be helping you with the change, can you please mention your name?

USER: I have reserved my flight ticket with name Emily Davis.

ASSISTANT: Please wait a moment, let me check with the details.

USER: Ok, I will wait.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Sorry, there are no active reservations on your given name to change.

USER: Ok, thank you for checking.

ASSISTANT: Thank you for reaching our service.