You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I am Frank Martinez. I want to book a flight ticket from PHL to LAX. Could you help me in booking?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My travelling dates are from 05/05 to 05/07.

ASSISTANT: Ok, do you have any other specifications?

USER: I need a halt.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thanks for your time, no flights were found on your route due to abnormal weather conditions.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.