You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am planning to meet my school friend in Seattle, so please book a flight ticket from IAH to SEA.

ASSISTANT: When you are willing to travel?

USER: I will start on July 15, return on July 17.

ASSISTANT: May, I know you good name?

USER: My name is Larry King.

ASSISTANT: Let me know your connection limit?

USER: I want direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.