You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Brandon Wilson.

ASSISTANT: How can I aid you at this moment?

USER: Can you find a direct flight for me in the morning from my return?

ASSISTANT: Sure, I am here to help you out with that. May I know your travel dates please?

USER: Ok, my planned dates are from June 24 to 26.

ASSISTANT: Let me know your airport codes please.

USER: Ok, my locations are from PHL to IAH.

ASSISTANT: May I know your class preference?

USER: I don't have.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights available as per your specifications.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.