You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am John Anderson.

ASSISTANT: How may I help you?

USER: I would like to travel from ORD to IAD, can you help me in booking flight ticket?

ASSISTANT: Sure, I am here to help you. May I know on what dates would you like to travel?

USER: My departure day is Dec 03, return day is Dec 05.

ASSISTANT: May I know your connection limit?

USER: I want a flight with one connection.

ASSISTANT: Is there any class preferences?

USER: No.

ASSISTANT: Can you please share your airline preferences?

USER: I am comfortable with any airline.

ASSISTANT: Do you have any specifications?

USER: My depart time should be afternoon.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: Not an issue, thank you.

ASSISTANT: Thank you for reaching us.