You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am planning for a round trip to TX-DFW with my sister's. Please help me with booking a direct flight.

ASSISTANT: Sure, please share me your travelling dates?

USER: I need to go on 10/10 to 10/12.

ASSISTANT: Do you have any specifications?

USER: I can pay up to 500.

ASSISTANT: Please wait for few minutes.

USER: Ok.

ASSISTANT: Sorry, there is no flight with your specifications. Can I know your name?

USER: Ok, thanks for the information. I am Samuel Harris.

ASSISTANT: Thank you for reaching us.