You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what type of service you are looking from us?

USER: I am Richard Phillips, can you help me for changing my existing reservation?

ASSISTANT: Sure, I will help you about it. Please, give me a moment to check the existing reservation under your name.

USER: Ok, I will wait for your reply, but get back with my reservation status.

ASSISTANT: Sorry Phillips, I can not find any reservation under your name in our database.

USER: Oh! It is ok, no problem.

ASSISTANT: Ok, thank you for reaching out here. Hope you have a great day ahead.

USER: Thank you for your services.