You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: This week I need to attend a exam conducting in Houston, so could you please reserve a seat from BOS to IAH?

ASSISTANT: Can you please mention your trip dates?

USER: My planning dates are 04/14 and 04/16.

ASSISTANT: Ok, please wait a moment.

USER: I want the best airline with single connection.

ASSISTANT: Sorry, unfortunately there is no flights available running on your route, you need to look for any other airport nearby.

USER: No, thanks.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your concern.

ASSISTANT: May I know your name?

USER: My name is Larry Clark. Welcome.

ASSISTANT: Thank you.