You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am looking to book a flight ticket from IAH to BOS. Can you help me for that?

ASSISTANT: Sure, please share your planned travel dates?

USER: My travelling dates are Jan 30 and Feb 01.

ASSISTANT: Do you have any connection limit?

USER: I prefer to book a direct flight in my journey.

ASSISTANT: Any other preferences?

USER: I don't have any other preference.

ASSISTANT: Can I have your name please?

USER: My name is Margaret Lopez.

ASSISTANT: Sorry, no flights found with your given details.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.