You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Amy Walker. I need to travel Detroit, Can you helping me booking flight ticket from ORD to DTW?

ASSISTANT: Ok, can I have your airport codes?

USER: I have already mentioned airport codes, please proceed with them.

ASSISTANT: Ok, please mention your travelling dates too.

USER: My travelling dates are 11/14 and 11/16.

ASSISTANT: Wait a moment.

USER: Take your time.

ASSISTANT: Sorry, there is no flight available on your route.

USER: That's not an issue, I will choose any other source to travel that place.

ASSISTANT: Thanks for choosing us, have a nice day.

USER: Thank you for helping me.