You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide today?

USER: I want to reserve my ticket from CLT to IAD, can you please help me out?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: Sure, my planned dates of journey are from Oct, 29 to Oct, 31.

ASSISTANT: May I know your name please?

USER: Sure, my name is Robert Campbell.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a direct flight.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Anyways, thank you for your service.