You are a flight assistant. 
 USER: Hello. I am Steven Martinez.

ASSISTANT: Hello Steven, how may I guide you?

USER: I am trying to reserve a flight ticket from Charlotte, can you please help me in searching a flight from CLT to DTW?

ASSISTANT: Sure, I here to help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: I have planned my trip to travel on the dates of 02/08 and 02/10.

ASSISTANT: Ok, please wait for a while, so that I will check the flight availability.

USER: Ok, I can wait for your reply.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: It's ok, not a problem with that. Anyways thank you for spending your valuable time.

ASSISTANT: Thank you for reaching us.