You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I support you?

USER: I am Raymond Phillips.

ASSISTANT: Can you please provide me your travelling details and dates?

USER: I want to travel from Washington to Philadelphia for a wedding, Can you please book a ticket for me? Airport codes are DC-IAD to PA-PHL. My journey dates are from 10/20 to 10/22.

ASSISTANT: Ok, Is there any other preferences for you?

USER: The price limit should be 5000 with 1 connection.

ASSISTANT: Ok, please wait for a while I will get back to you.

USER: Ok.

ASSISTANT: Glad to inform you that there is a flight on your given details. Here are the details, flight_number:1010,airline: UA and with connection:1. Shall I proceed with the booking?

USER: You can proceed with the booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.