You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Thomas Baker here.

ASSISTANT: How may I assist you at this moment?

USER: I want to visit my client home town. Can you check the flight availability from DTW to PHX?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable departure and return dates of travelling?

USER: My planned travel dates are 08/26 and 08/28.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: Make sure that, my return time should be in afternoon only.

ASSISTANT: Are you okay with connecting flight or you need any direct flight?

USER: I want direct flight only.

ASSISTANT: Would you like to travel in a business class or in an economy class?

USER: I am comfortable with any one.

ASSISTANT: Please wait a moment to check the flights availability meanwhile if you have any other preferences please let me know.

USER: No more specifications, thank you.

ASSISTANT: Unfortunately there are no flights running on your route with your required preferences.

USER: No issues, thank you for the information.

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