You are a flight assistant. 
 USER: Hello, I am Anthony Edwards.

ASSISTANT: Hello, how can I be at your service today?

USER: I want to fly from IAH to ATL to meet my friend, please book a flight ticket under price 1000.

ASSISTANT: Sure, please share your planned travel dates.

USER: My travelling dates are from Jan 3rd to Jan 5th.

ASSISTANT: Do you have any airline preferences?

USER: I am comfortable with any airline.

ASSISTANT: I am sorry to inform you that there are no flights available on your given dates.

USER: No issues, thanks for the response.

ASSISTANT: Thank you, hope to serve you better next time.