You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, I will be happy to help you. Can you please provide me your travel dates?

USER: My trip dates are 03/14 to 03/16.

ASSISTANT: Clark, there is no flight available on your preferred travel dates.

USER: No issue, thank you for checking.

ASSISTANT: You are welcome and thank you for choosing us.