You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Nicole Garcia want to travel from DCA to LAX, can you please avail me a flight ticket?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are from May 10th to May 12th.

ASSISTANT: Do you have any specifications?

USER: Yes, I want to return in the afternoon.

ASSISTANT: Do you have any preferences?

USER: No, I don't have any other preferences.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Welcome, have a great day.