You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I abet you?

USER: I am Amy Jackson, I want to exhibit my arts in an exhibition at Washington. Can you help me in booking the flight ticket?

ASSISTANT: That's good Jackson. Can you help me with your itinerary dates?

USER: I prefer to fly on 07/21 and my return will be on 07/23.

ASSISTANT: Noted. May I know your travelling airport abbreviates?

USER: My travelling airport codes are from DTW to IAD.

ASSISTANT: Thank you for providing your travelling details. Please hold on for a moment to check the flight availability.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry Jackson, I did not find any flights on your required dates.

USER: That's ok, no problem.

ASSISTANT: Do you have any other planning dates to travel?

USER: No, thank you for your service.

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

USER: Welcome.