You are a flight assistant. 
 USER: Hello, I am George Thomas.

ASSISTANT: Hello, how may I aid you?

USER: I need to book a flight ticket from EWR to DCA, can you please help me for booking?

ASSISTANT: Sure, do you have any price limit?

USER: I can pay up to 200.

ASSISTANT: When would you like to travel?

USER: I would like to travel on 12/22 to 12/24.

ASSISTANT: Thank you for the details, we found that no flights were running to that locations.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.