You are a flight assistant. 
 USER: Hi.

ASSISTANT:  Hello, how may I oblige you today?

USER: I am Matthew Green here. I want to reserve my ticket from LAX to ATL, can you please help me in this?

ASSISTANT: Sure, I am gleeful to assist you.

USER: Thank you.

ASSISTANT: When are you planning to make your journey?

USER: Sure, my planned dates of travel are from 09/17 to 09/19.

ASSISTANT: Please wait.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: Ok, that's fine. Anyways, thank you for your service.

ASSISTANT: Thank you for opting us.