You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Christopher Edwards.

ASSISTANT: Glad to meet you, Edwards. How may I assist you?

USER: I have to go IAD for giving a seminar to students about science and technology, can you please book a flight ticket from ATL?

ASSISTANT: Sure, could you please mention your dates of journey?

USER: My departure date is 06/26 and please book my return flight ticket also on 06/28.

ASSISTANT: Ok, please wait for a mean while.

USER: Ok.

ASSISTANT: The flight with connections limit is 1 of cost 400 has found as per your request.Shall I proceed?

USER: But my budget limit is 200. Can you please check is there any flight available with my price limit?

ASSISTANT: Sorry, there is no flights found as per your price limit.

USER: It's ok no problem, I will go with another airline. Thank you for your information.

ASSISTANT: Thank you for consulting us.