You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am David Rodriguez. I am planning to book a flight ticket to MSP from IAH, can you please be a helping hand in making my reservation?

ASSISTANT: Sure, may I know your trip dates?

USER: My journey dates are 08/14 to 08/16.

ASSISTANT: Sorry, there is no flights available.

USER: No issue, thank you for checking.

ASSISTANT: Most welcome.