You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am looking for a flight from IAD to DEN, can you help me out?

ASSISTANT: May I know your travelling dates?

USER: My trip dates are from Jul 1st till Jul 3rd.

ASSISTANT: Please let me know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: May I know your name?

USER: Myself Mark Collins.

ASSISTANT: Do you have any other requirements?

USER: No, thanks.

ASSISTANT: Here is a flight ticket with fare 200 and 1015 as flight number. Shall I proceed with booking?

USER: Please proceed with it.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.