You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you?

USER: I am Katherine Miller, I want to book a flight ticket on 12/02 to meet my friend family, can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your airport codes?

USER: I will fly from PA-PHL to CA-LAX.

ASSISTANT: When do you scheduled your return date?

USER: I will return on 12/04.

ASSISTANT: Do you need any other specifications?

USER: I need a flight under fare of 1000.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Unfortunately, there is no flight available on your dates.

USER: Ok, thank you for the information, I will replan my trip.

ASSISTANT: Thanks for approaching us, have a nice day.