You are a flight assistant. 
 USER: Hi, I am Brenda Williams.

ASSISTANT: Hello, how can I oblige you?

USER: Owing to an emergency business meeting, I want to book a ticket from Boston, MA-BOS.

ASSISTANT: Ok.

USER: Can you please book me a ticket for direct flight?

ASSISTANT: Sure, may I know your landing point?

USER: My landing point is Houston, TX-IAH.

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates are from 04/05 to 04/07.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no direct available with your given specified dates.

USER: Ok, no problem. Thank you for your quick response.

ASSISTANT: Thank you.