You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Eric Robinson. Can you please help me in booking my flight ticket from LAX to DCA?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My travelling dates are 08/31 and 09/02.

ASSISTANT: Please wait for a minute. I am sorry to say that there is no flight found under your details.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us, have a great day.