You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Benjamin Roberts here, I want to reserve my ticket from LAS to IAD, can you please help me out?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my planned dates of journey are from Oct, 13 to Oct, 15.

ASSISTANT: May I know your connection limit?

USER: I am ok with any connections limit.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching us.