You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Samantha Baker.

ASSISTANT: How can I assist you today?

USER: I have a client meeting at Houston. Can you please help me in reserving the ticket from DTW to HOU?

ASSISTANT: Ok, please let me know the dates of your journey.

USER: I am planning my trip on July 23, and again I will be return back on July 25.

ASSISTANT: Please let me know the specification you are looking for.

USER: I am flexible to return in afternoon.

ASSISTANT: Sorry, there are no flights available at your locations to book.

USER: Not a big deal, anyhow thank you very much for your service.

ASSISTANT: Ok, thank you for choosing our agency.

USER: You are most welcome.