You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service do you want for today?

USER: Myself Stephanie Martin.

ASSISTANT: Yes, Stephanie.

USER: I have planned a small hangout trip with my friends, can you help me with booking a ticket from DTW to HOU?

ASSISTANT: Sure, I am here to help you. Could you please help me with your journey dates please?

USER: My travelling dates are 12/19 and 12/21.

ASSISTANT: Stephanie, give me a moment, I will be back soon with the available tickets.

USER: Ok.

ASSISTANT: Thank you for waiting.

USER: Welcome.

ASSISTANT: Stephanie, sorry to inform you that there is no flight found on your requested dates. Do you want to fly with another dates?

USER: Oh, it's ok no problem. No thanks.

ASSISTANT: Thank you for reaching us, have a nice day.