You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me booking a flight ticket from IAD to HOU?

ASSISTANT: Sure, please help me with your travel dates.

USER: I will start on 10/14 and return on 10/16.

ASSISTANT: May I know your name?

USER: I am Brain Williams.

ASSISTANT: Do you need any break in between your journey?

USER: I need a break in my journey.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Sorry, we did not find any flights for you.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.