You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a direct flight from San Francisco, CA - SFO to Houston, TX - IAH, can you please help?

ASSISTANT: Sure, do you prefer a direct flight or a connected flight?

USER: I already mention I want a direct flight.

ASSISTANT: Ok, May I know your travelling dates?

USER: My planned travel dates are 01/07 and 01/09.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, No flights were found with your given requirements.

USER: No problem, thank you.

ASSISTANT: May I know your name?

USER: My name is Barbara Phillips.

ASSISTANT: Ok, Thank you for choosing us.