You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Could you book my ticket in a direct flight?

ASSISTANT: Sure, may I know your airport codes please?

USER: I want to travel from MCO to SFO.

ASSISTANT: Let me know your travel dates please.

USER: I want to travel on Aug 25 and Aug 27.

ASSISTANT: Do you have any connection limit?

USER: I want direct flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer normal-cost airlines.

ASSISTANT: May I know your name to proceed?

USER: Janet Davis here.

ASSISTANT: Let me know, if you have any more specifications.

USER: I have no more specifications.

ASSISTANT: Ok, be on hold.

USER: Sure.

ASSISTANT: Sorry, no flights are found on your desired routes.

USER: No problem, thank you.

ASSISTANT: Thanks for availing us.