You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me to book a flight from LAX to reach DCA?

ASSISTANT: May I know your trip dates?

USER: My planned dates are on June 9th to 11th.

ASSISTANT: Is there any connection limit?

USER: Yes.

ASSISTANT: Any more requirements?

USER: I would like to go in an economy class.

ASSISTANT: May I know your name?

USER: Sure, my name is Samantha Hall.

ASSISTANT: Sorry to inform, there were no flights found with your required dates to travel.

USER: No issues, thank you.

ASSISTANT: Thank you for opting us.