You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER:  I have planned to book a ticket from SEA to IAH, can you assist me in booking my ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are Apr 30th and May 2nd.

ASSISTANT: May I know your connection limit?

USER: I need one connection between my trip.

ASSISTANT: Is there any class preference for you?

USER: I need economy class.

ASSISTANT: Do you have any other specifications?

USER: I want normal-cost airlines.

ASSISTANT: Your good name please.

USER: Debra Davis.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for reaching us.