You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am Jacob Hill from Detroit. I want to go Houston next week, can you please book a flight ticket for me?

ASSISTANT: Sure, I am happy to help you with flight ticket booking.

USER: Thank you.

ASSISTANT: Can I have your travel dates please?

USER: I want to take off on 08/09 and return date is 08/11.

ASSISTANT: May I know airport codes of your journey locations?

USER: I want to fly from DTW and destination airport is HOU.

ASSISTANT: Ok, please wait a moment to check for flight availability.

USER: Ok.

ASSISTANT: Sorry Jacob Hill, no flight is available to you on your dates.

USER: Oh! So sad to hear that, it's ok no problem, I will go with another airline. Thank you for your service.

ASSISTANT: Thank you for choosing us, have a great day.