You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assit you today?

USER: I am Nicole Williams. Can you help me in booking the ticket from PHL to LAX?

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

USER: My planning dates are from 02/20 to 02/22.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no flights found under your preferable details. Thank you for reaching us, have a great day.

USER: That's fine, thank you for your help.