You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Barbara Martin, help me to find a flight from PA-PHL to CA-LAX to attend a meeting with my client.

ASSISTANT: Sure, we are here to help you. May I know your depart and return dates?

USER: I will travel on 07/26 and return on 07/28. I need a flight of fare 200.

ASSISTANT: Ok, may I know your required connection limits?

USER: I need a flight with single connection.

ASSISTANT: Thank you for providing your information. Sorry, to inform you there is no flight available.

USER: Ok, thank you.

ASSISTANT: Thanks for choosing us.