You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carolyn Mitchell.

ASSISTANT: Welcome to our flight travel agency, how may I assist you today?

USER: Just now, I got a call from my boss. there is an urgent meeting with our clients. so, I need to attend the meeting. Can you help me in booking the ticket?

ASSISTANT: That was an awkward moment I think, can I know your airport codes for further proceedings?

USER: My journey airport codes are IAD and DTW.

ASSISTANT: Ok, please provide your itinerary dates.

USER: He told to be there on 04/24. so, I need a ticket from 04/23 to 04/25.

ASSISTANT: Sorry Carolyn, there is no flight available for your planned dates. Do you want to travel on any other travel dates, so that I can help you with that.

USER: I need to attend on those days. so, I will look after other agency. Anyway, thank you for your help.

ASSISTANT: Best of luck for that, thank you for reaching us.

USER: You are welcome.