You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Justin Robinson.

ASSISTANT: What type of service you are expecting from us?

USER: Actually, I am looking for a flight having single connection because my friend also booked the same flight that I want to travel, so can you please help me out with booking of a flight ticket from JFK to IAD?

ASSISTANT: Sure, I am here to help you in booking a flight ticket. When you are planning to travel?

USER: Thank you for accepting my request and I have planned to move on 10/25 and return back on 10/27.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: It's alright and I can wait for your response.

ASSISTANT: We are regret to say that, there are no flight's available based on your travelling dates.

USER: Ok, that's fine. Ic an prefer any other source to reach to my location. Thank you for your help.

ASSISTANT: Thank you for choosing us. Have a nice day.

USER: Welcome.