You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samuel Mitchell here.

ASSISTANT: what service do you need from us?

USER: I would like to visit Los Angels for a business meeting, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Could you please mention your travel dates?

USER: Sure, I am willing to travel on 01/08 and please book my return ticket on 01/10.

ASSISTANT: Ok, which airports do you prefer to travel?

USER: Sure, I want to travel from DCA to LAX.

ASSISTANT: Ok, please wait a minute while I am checking the flight.

USER: Please make sure that flight should be with connection 1.

ASSISTANT: Sorry to inform you, there are no flight available with connection limit 1 in this route.

USER: Oh! So sad to hear that. Anyway, thank you for the information.

ASSISTANT: You are most welcome. Thank you for reaching us.

USER: Welcome.