You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to reserve my flight from LAS to reach DFW, as I have a meeting there? Can you please reserve it?

ASSISTANT: Can you share me your travelling dates?

USER: Sure, my travel dates are Jan 14th and 16th.

ASSISTANT: Is there any connection requirement?

USER: I need a single connecting flight.

ASSISTANT: May I know your name?

USER: My name is Gary Mitchell.

ASSISTANT: Do you have any other specifications?

USER: I would like to return in the morning.

ASSISTANT: Ok, please wait.

USER: Ok, sure.

ASSISTANT: Sorry, there is no flight with your required date to travel.

USER: Ok, not a problem. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.