You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please book me a flight ticket from HOU to BOS to meet my family?

ASSISTANT: Sure, may I know your good name?

USER: Laura King.

ASSISTANT: Could I have your journey dates, please?

USER: I have planned to travel on Feb 15th and return on Feb 17th.

ASSISTANT: Do you have any preferences?

USER: I like direct flight.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, please book it. Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.