You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Anna Martinez.

ASSISTANT: How may I guide you? Nice to meet you Anna.

USER: I am planning to attend live music concert at Washington, IAD.Can you please help me with booking a flight from LAX?

ASSISTANT: Sure, will you please provide your planning dates to move?

USER: Sire, I would like to take off on 10/29 and return back from Washington on 10/31.

ASSISTANT: Ok, thank you for your valuable information.

USER: You are welcome.

ASSISTANT: Please be on hold I will check and revert you back if any flights found on your dates.

USER: Sure.

ASSISTANT: Thank you for your patience. Sorry to say that, there is no airlines available to block your seat to your landing location.

USER: Ok, no issues. I will try another way to complete my trip.

ASSISTANT: The tickets were completely filled due to busy days.

USER: No problem.

ASSISTANT: Ok, thank you for your valuable time in reaching us. Have a great day Anna.

USER: You are welcome.