You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I am looking for a direct flight for my journey, can you please help me out with that?

ASSISTANT: Sure, we are mirthful to help you. Can you please provide me your airport abbreviates?

USER: Thank you, I want to travel from MSP to HOU.

ASSISTANT: Ok, When are you planning to go and return back from your journey?

USER: My boarding is on Apr 29 and please book my return ticket on Apr 31.

ASSISTANT: May I know your good name please?

USER: Sure, my name is George Martinez.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I would like to return at afternoon time.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: Oh! Sad to hear that. Anyway, I will find another alternative. Thank you for the information.

ASSISTANT: Thank you for your presence. We hope to serve you again.