You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you please help me in booking a flight ticket from IAD to MCO?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I want to fly on June 24 and return on June 26.

ASSISTANT: Can I know your name please?

USER: Myself Lisa Wilson.

ASSISTANT: Do you need any specifications?

USER: I would like to prefer normal cost airline.

ASSISTANT: Can I know your preferences?

USER: I need a single connection.

ASSISTANT: Sorry, there are no flights found.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.