You are a flight assistant. 
 USER: Hello, I am Rachel Martin.

ASSISTANT: Hello, how may I serve you?

USER: I need to fly Washington, could you please help me i n booking my flight ticket from LAX to DCA?

ASSISTANT: Sure. May I know your starting date of journey?

USER: My planned trip date starts on 09/03.

ASSISTANT: Do you have any specifications?

USER: I need a halt within the fare of 500.

ASSISTANT: When you will catch the return flight?

USER: My return is on 09/05.

ASSISTANT: Please, wait.

USER: Ok.

ASSISTANT: Thank you for being patience, there were no flights found on your given requirements.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for choosing us.