You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to enjoy this weekend with my family at Phoenix, can you please help me in booking a flight ticket from IAD?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Sure, my planning dates are 8th Dec and 10th.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: No, I don't have any time preference.

ASSISTANT: May I know your connection limit?

USER: I am comfortable with single connection.

ASSISTANT: May I know your name to proceed further?

USER: Sure, my name is Katherine Evans.

ASSISTANT: Delta airlines is providing a connecting flight with the ticket fare of 100 and depart time is 13:00, arrival time is 11:00. Shall I proceed?

USER: Yes, please go ahead.

ASSISTANT:  Your booking is done and flight number is 1008 with economy class.

USER: Thank you for your kind help.

ASSISTANT: Thank you for reaching us.