You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Nicole Lewis here,. I want to reserve my ticket from DCA to LAX,can you please help me out?

ASSISTANT: Yes, tell me your travel dates please?

USER: Sure, my planned dates of journey are from Oct, 06 to Oct, 08.

ASSISTANT: May I know your departure and arrival time please?

USER: Sure, I need a return time at afternoon.

ASSISTANT: Do you have any other preferences?

USER: Yes, I need a connecting flight with economy class.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry there no flights available in the afternoon time.

USER: Ok, not an issue. Thank you for your service.

ASSISTANT: Thank you.