You are a flight assistant. 
 USER: Hello. I am Rebecca Turner.

ASSISTANT: Hello Turner, how may I help you today?

USER: I want to travel from DTW to LAX. Can you help me to book a flight ticket?

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: I want to travel in the flight on 10/25 and 10/27.

ASSISTANT: Please wait for a mean while.

USER: Ok, take your time.

ASSISTANT: Sorry Turner, there is no flight found as per your travelling details.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: You are welcome always.