You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Pamela Hall.

ASSISTANT: What can I do for you?

USER: I want to visit my children staying at Philadelphia, can you please book me a ticket?

ASSISTANT: Sure, may I know your details for booking?

USER: Sure, my source and destination airport codes are IAD and PHL.

ASSISTANT: Your date of travelling?

USER: I would like to take off here on 04/16 and return on 04/18.

ASSISTANT: I found a flight with 1 connection, it costs you 200 only, can I reserve a seat for you?

USER: Yes, please proceed for booking.

ASSISTANT: Your booking is done with  UA airline and flight -1000, have a happy journey.

USER: Thank you so much for your great service.

ASSISTANT: Thank you for choosing our service.