You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I want to meet my grand father in IAD. Can you please make a reservation from DCA?

ASSISTANT: Sure, can you please mention your connection limit?

USER: I am looking for a flight with single connection.

ASSISTANT: Kindly assign your depart and arrival dates of the journey?

USER: I want to depart on Dec 25 and need to return on Dec 27.

ASSISTANT: In which airlines you wish to travel?

USER: I am comfortable with any airline.

ASSISTANT: Do you have any more specifications in your journey?

USER: No.

ASSISTANT: May I know your name please?

USER: Katherine Hall.

ASSISTANT: We found a Delta airlines, flight number 1000, price is 100 with single connection.

USER: Ok, please proceed.

ASSISTANT: Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved in economy class.

USER: Thank you.

ASSISTANT: Thank you for connecting with us.