You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Sure, I will help you with this. May I know your planned dates of journey?

USER: My planned dates are 12/07 and 12/09.

ASSISTANT: Meanwhile, please provide your name.

USER: Myself Stephen Thompson.

ASSISTANT: Stephen Thompson, there are no flights available on your provided dates.

USER: Ok, fine. thank you for checking.

ASSISTANT: Thank you for contacting us.