You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me to book flight ticket from LGA to IAH?

ASSISTANT: Sure, please share your planned trip dates?

USER: My journey dates are Apr 8 and Apr 10.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Any other requirements to be met?

USER: I prefer to travel in normal cost airline.

ASSISTANT: May I know your name?

USER: I am Shirley Williams.

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

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.