You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you?

USER: I am planning to visit Mount Evans in Denver, DEN. Can you avail me to book a direct flight?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: My journey dates are Oct 18 and Oct 20.

ASSISTANT: May I know your good name please?

USER: Sure, Amy Gonzalez here.

ASSISTANT: May I know your depart location please.

USER: I want to depart from Orlando, MCO.

ASSISTANT: Do you have any class preferences?

USER: I want to travel in economy class.

ASSISTANT: Are you looking for any connecting flights?

USER: No, I am looking for a direct flight.

ASSISTANT: There is no flights found at the moment.

USER: Can you check the availability of return flight in afternoon time?

ASSISTANT: As per your preferences there is no flight found in our database.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.