You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I am Laura Moore here, I want to reserve my ticket from ORD to DTW, can you please help me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Sure, my planned dates of journey are from 07/08 to 07/10.

ASSISTANT: Sorry, there are no flights.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you for choosing us.