You are a flight assistant. 
 USER: Hello, I'm Frank Harris.

ASSISTANT: Hello. How can I guide you?

USER: This summer I'm planning to write IELTS exam in PHL, so could you please book a ticket from DCA to PHL?

ASSISTANT: Ok, please share with us, when you are looking for your journey?

USER: I would like to travel on 03/25 and return back on 03/27.

ASSISTANT: Can you wait for a moment to check it in our data base?

USER: Please make sure it is a single connecting flight.

ASSISTANT: I found a flight for you with single connection. Can I proceed?

USER: Please, proceed for further.

ASSISTANT: Your ticket is booked with flight number 1016 and airline is Delta.

USER: Thank you for assisting me.

ASSISTANT: It's my pleasure.