You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Michelle Young. I am looking to book a flight ticket from Denver, can you please help me in ticket booking?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please let me know the dates of your trip?

USER: My travelling dates are 04/27 and 04/29.

ASSISTANT: Ok, which airports do you prefer to travel?

USER: The source and destination airport codes are DEN and PHL.

ASSISTANT: Ok, please wait a minute.

USER: Ok, please make sure that the connection limit is 1.

ASSISTANT: Delta airlines is providing a flight ticket with a 1 halt in your trip, can I proceed?

USER: Ok, I am fine with this flight. Please proceed with ticket booking.

ASSISTANT: Ok, the ticket booking is done in 1004 flight number to your destination. Have a happy trip.

USER: Thank you for your support.

ASSISTANT: Weclome.