You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you in this session?

USER: Can you please book a flight from MSP to HOU?

ASSISTANT: Sure, please provide me your travelling dates.

USER: My travel dates are June 16th and 18th.

ASSISTANT: Ok, do you have any class preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I want to return in the afternoon time.

ASSISTANT: Sure, may I know your name please?

USER: My name is Jerry Roberts.

ASSISTANT: Any airline preference do you have?

USER: I don't have any preference.

ASSISTANT: Ok, do you prefer connected or direct flight?

USER: No.

ASSISTANT: Based on your required specifications we do not found any flight in airline database.

USER: No problem, thank you.

ASSISTANT: Thanks for contacting us.