You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I would like to travel from DCA to PHX, can you help me to book a flight ticket?

ASSISTANT: Sure, I am oblige to help you with that. Can you please provide your preferable dates of travelling?

USER: My travel dates are Apr 09 and Apr 11.

ASSISTANT: May I know your name to book the flight ticket?

USER: I am Mark Davis.

ASSISTANT: Any connection limit do you have?

USER: Yes, I prefer connecting flight.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: I am comfortable with any timings.

ASSISTANT: Do you have any other specifications?

USER: No, I don't have.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: Based on your information, I have found a flight with 1 connection having with the fare of 100 provided by Delta airlines in economy class. Are you ok with this flight?

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: Ok, your ticket has been booked in flight number 1019.

USER: Thank you.

ASSISTANT: Thank you for approaching us, hope you have a great journey.