You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Could you please help me in flight ticket booking process from PHL to IAD?

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: Thank you for your response, I want to take off on Aug 22 and book my return ticket also on Aug 24.

ASSISTANT: May I know your name please?

USER: Sure, my name is Jonathan Robinson.

ASSISTANT: Do you have any connection limit?

USER: No.

ASSISTANT: Is there any other specifications?

USER: I will prefer to travel in business class flight.

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

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.