You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to travel from MCO to IAD. Can you help me with that?

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

USER: My trip dates are 04/16 and 04/18.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Please provide me the name to reserve the ticket.

USER: Susan Parker.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for reaching us.