You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Please book my ticket from IAH to SEA.

ASSISTANT: Sure, I am glad to help you. Could you please provide me your trip dates?

USER: My itinerary dates are May 7 and May 9.

ASSISTANT: Is there any class preference?

USER: I prefer economy class.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Can you please share your airline preferences?

USER: I want to fly in normal-cost airlines.

ASSISTANT: Do you have any requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Larry Wilson here.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.