You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Could you please book a flight ticket from LGA to LAS?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I want to travel on Sept 03 and return on Sept 05.

ASSISTANT: Ok, could I have your name please?

USER: My name is Patrick Carter.

ASSISTANT: Ok do you need direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: I want to depart in the morning.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Not a problem, thank you for the information.

ASSISTANT: You are welcome, have a great day.