You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from MCO to IAD?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to depart on Oct 10th and return on Oct 12th.

ASSISTANT: Do you have any other requirements?

USER: I am looking for a connecting flight.

ASSISTANT: May I know your airline preference?

USER: I would prefer not to fly a low- cost airline.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: May I know your name?

USER: I am Barbara Williams.

ASSISTANT: Sorry, there are no flights available.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for approaching us.