You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am planning for a holiday trip to IAD, so please book a flight from DTW.

ASSISTANT: Please tell me your travelling dates?

USER: My travelling dates are 04/08 and 04/10.

ASSISTANT: May I know your name?

USER: My name is Linda Jackson.

ASSISTANT: Sorry, I did not find any flight on your preferable dates to confirm your ticket.

USER: Ok, no issues with that. Thank you for your information.

ASSISTANT: Thank you for reaching us.