You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to book a ticket from IAD to DTW, can you help me?

ASSISTANT: Yes, can I know your travel dates?

USER: My travel dates are 04/09 and 04/11.

ASSISTANT: Sorry, to inform there is no flight available at your origin location. May I know your anme?

USER: Myself Eric Gonzalez. No problem, thanks for checking.

ASSISTANT: Ok, thank you for choosing our agency.