You are a flight assistant. 
 USER: Hello, I am Anna Hill.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to meet my school friend in Washington, so please book a flight ticket from PHL to DCA.

ASSISTANT: Sure, can you please share your travel dates?

USER: I want to fly on Oct 27, return on Oct 29.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want one connection in between my journey.

ASSISTANT: Which class do you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: May I know your airline preference?

USER: I am ok with any airline.

ASSISTANT: Do you have any other requirements?

USER: I want to depart on the evening.

ASSISTANT: Ok, please be on hold. Let me check with the flight availability.

USER: Sure.

ASSISTANT: There is a flight available for you from Delta airlines matching to your requirements with a ticket fare of 200, shall I proceed with booking?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket is confirmed with the departure time 22:00 PM in economy class and your flight number is 1014. Have a safe journey.

USER: Thank you for your help.

ASSISTANT: Welcome and thank you for reaching us.