You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: Can you help me book a flight ticket from Phoenix, AZ - PHX to Washington, DC - DCA on the name of Melissa Lee?

ASSISTANT: For what service you have visited us? Ok, I will help you with booking. Can you mention your travelling dates of your journey?

USER: Sure, they are planned to be on 02/19 and 02/21.

ASSISTANT: For your journey,  Do you prefer any connections or not?

USER: I need a flight with single connection.

ASSISTANT: Ok, Please be wait.

USER: Sure.

ASSISTANT: Thanks for your time. We found a UA airline, with flight number-1022, ticket fare- 100 and connections-1, available for your journey.

USER: You can proceed for booking.

ASSISTANT: Ok, Your booking has been done.

USER: Thank you for helping me with the booking.

ASSISTANT: Thank you for visiting our UA airlines, visit again!.