You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me in booking my flight ticket from IAH to MSP?

ASSISTANT: Sure, can you share your trip dates?

USER: My trip dates will be Apr 18th to Apr 20th.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Is there any class preference?

USER: I prefer a business class.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Please forward your name.

USER: I am Amanda Miller.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Its ok, thank you.

ASSISTANT: Thank you.