You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Edward Anderson here.

ASSISTANT: Can you please tell me how may I help you?

USER: I am looking for a flight ticket to Washington for my business trip. Can you book it?

ASSISTANT: Sure, I can help you in booking the ticket. What are your source and destination airport codes?

USER: My airport codes for the journey would be from DEN to IAD.

ASSISTANT: Ok, please let me know your planned journey dates.

USER: Yes, my travel dates for the journey are from 01/30 to 02/01.

ASSISTANT: Ok, do you need any connections in between your journey?

USER: I am looking for a connecting flight.

ASSISTANT: Ok, please give me a minute.

USER: Sure. I will be returning at the afternoon time on the departure day.

ASSISTANT: Sorry to inform you, there are no flights departing in the afternoon on the dates you have given.

USER: Ok, that is not a problem. Thank you.

ASSISTANT: You are welcome. Thank you for choosing us.