You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me to book a flight ticket from IAH to MSP?

ASSISTANT: Sure, We are here to help you. Please share me your travelling dates.

USER: My travelling dates are July 26 to July 28.

ASSISTANT: May I know your name?

USER: Barbara Davis here.

ASSISTANT: Is there any other specifications?

USER: I need a direct flight. I want to depart in the evening.

ASSISTANT: Ok. Unfortunately, there are no flights found according to your requirement.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.