You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I help you?

USER: Myself Patricia Edwards. I want to travel DFW for a business meeting purpose, can you please book a flight ticket from IAD?

ASSISTANT: Ok, can you please share your travel dates?

USER: My departure date is 10/24 and please book my return ticket also on 10/26.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform you, there are no flights available in this route.

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

ASSISTANT: Thank you for reaching us.

USER: Welcome.