You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Ruth Johnson here. I would like to book a ticket from IAD to MCO, can you please help me with that?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: The travel dates are from 03/17 to 03/19.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Do you have any specifications?

USER: I need a halt.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: That's ok, thank you for your help.

ASSISTANT: Welcome, have a great day.