You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to book a flight from EWR to IAH?

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

USER: My trip dates are Mar 20 and 22.

ASSISTANT: May I know your connection limit?

USER: I need a break in my journey.

ASSISTANT: Is there any class preference for you?

USER: I prefer to travel in economy class.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Your good name please.

USER: Barbara Evans here.

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

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.