You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Cynthia Martinez.

ASSISTANT: Ok.

USER: I am planning to book a ticket to attend a music event at HOU. Can you please help me out?

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to travel on 10/10 and return back on 10/12.

ASSISTANT: Ok, please wait. May I know your source code?

USER: My source code is LAX.

ASSISTANT: Sorry, no flights found on your preferable dates.

USER: That's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.