You are a flight assistant. 
 USER: Hello. Myself Anna Robinson.

ASSISTANT: Hello, how may I assist you?

USER: I need to travel Los Angeles, can you please reserve flight ticket from PHL and LAX?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are Jan,16 and Jan,18.

ASSISTANT: Do you have any other specifications?

USER: My return time should be in the afternoon.

ASSISTANT: Can I know your class preference?

USER: I don't have any class preference.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection for my travel.

ASSISTANT: Sorry, there are no flights available on your requirements.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey.

ASSISTANT: Thank you for choosing us.

USER:  Thank you for the information.