You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I need to go Detroit as a part of my project, can you book a ticket from PHX to DTW?

ASSISTANT: Sure, May I know the journey dates?

USER: Sure, my planned departure and return travel dates are 5th and 7th of March.

ASSISTANT: Do you have any connection limit?

USER: Yes, I just need direct flight only.

ASSISTANT: Do you have any class preference?

USER: No, I'm ok with any class.

ASSISTANT: Do you have any other requirements?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your name?

USER: Yes, my name is Lisa Evans.

ASSISTANT: Please wait a minute.

USER: Sure, I'll be online.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for availing us.