You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I have to attend a science exhibition as a chief guest, can you please book me a flight ticket to IAD?

ASSISTANT: Sure, I will do. For this I want to know your journey details.

USER: I would like to start from PHX. Travelling dates are on 05/30 and on 06/01.

ASSISTANT: Are you having any specifications?

USER: Yes, I need one connection.

ASSISTANT: Ok. Let me know your name to book a ticket.

USER: Patrick Wilson.

ASSISTANT: Patrick Wilson, thank you for being patience. We found that there was no flight that matches  with your information.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for your support.