You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Pamela Green. I would like to visit Houston Arboretum and Nature Centre at Houston, IAH.

ASSISTANT: Ok.

USER: So, could you please help me with booking a flight ticket from DCA?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are 04/07 and 04/09.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight. I can spend up to 500.

ASSISTANT: We found an a Frontier airline with flight 1024 having a fare 100 with halt.

USER: Plesae book it for me.

ASSISTANT: Your booking has been processed. Thank you for reaching us.