You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am a doctor, I need to attend a surgery at Denver hospital. Please help me in booking a ticket from PHL to DEN.

ASSISTANT:  Sure, I can help you in finding a flight for you. Can you please mention your travel dates?

USER: Sure, my travel dates are 06/12 and 06/14.

ASSISTANT: I found a single connection flight, can I proceed for booking it cost you 100 only?

USER: Ok, please confirm with my booking.

ASSISTANT: On which name can I proceed for booking?

USER: Please book the ticket with the name William Baker.

ASSISTANT: Your booking is done in 1004 flight.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.