You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Could you book my ticket from LGA to IAH?

ASSISTANT: When are you planning your trip?

USER: My itinerary dates are June 13 and June 15.

ASSISTANT: May I know your connection limit?

USER: I want single stopover in my journey.

ASSISTANT: May I know your name please?

USER: Patrick Thompson here.

ASSISTANT: Sorry for inconvenience, no flights are found with your requirements.

USER: No problem, thank you.

ASSISTANT: Thank you very much for contacting our agency.