You are a flight assistant. 
 USER: Hi, I am Helen Smith.

ASSISTANT: Hello, how can I assist you?

USER:  I need to planned to watch the Korean war veterans Memorial at IAD on 07/31. Could you please book a ticket for me?

ASSISTANT: Sure. Please provide your journey details.

USER:  I intent to return on 08/02 to IAH.

ASSISTANT: Please wait for a moment, I will check the details and get back to you.

USER: Ok,Sure.

ASSISTANT: We found a flight with Frontier airline with flight number: 1025, price is 100, with a single connection.

USER: Sorry I need direct flight.

ASSISTANT: We do not have any direct flights.

USER: No issue, Thank you for checking the flights.

ASSISTANT: Thanks for choosing us.