You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Michael Phillips here.

ASSISTANT: How can I aid you?

USER: Please reserve a flight ticket from IAH to MSP for my business trip.

ASSISTANT: Sure, May I know your travelling dates?

USER: Thank you for taking my request into consideration. My departure is on Apr 14 and please book my return ticket also on Apr 16.

ASSISTANT: Do you have any preferences?

USER: I will prefer single connection for my journey.

ASSISTANT: Thanks for your details, please hold on.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting. There are no flights found on your data.

USER: Sad to hear that. Anyway, I will find another alternative to reach my destination. Thank you for the information.

ASSISTANT: Thank you.