You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Myself Rachel Gonzalez. I need to travel Houston, can you please reserve flight ticket from DTW and HOU?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are Jan,21 and Jan,23.

ASSISTANT: Do you have any airline preferences?

USER: I don't have any airlines preference.

ASSISTANT: Do you have any class preferences?

USER: I don't have any class preference.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: My depart time should be in the morning.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: That's ok, I will choose any other alternate source to reach my destination.

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