You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Alexander Hernandez. I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from EWR to DCA?

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

USER: I would like to depart on Feb 10th and return on Feb 12th.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Is there any connection limit?

USER: I am looking for a direct flight.

ASSISTANT: Do you have any specifications?

USER: Make sure that my depart time must be morning.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.