You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Deborah Lee.

ASSISTANT: How may I help you?

USER: I want to book a flight ticket from PHX to DEN. Could you help me in booking?

ASSISTANT: Please provide your travel dates.

USER: My journey dates are from 09/15 to 09/17.

ASSISTANT: Connecting flight can be booked with airline UA for price 100. Shall I book a ticket?

USER: Yes, please proceed.

ASSISTANT: Ticket is booked with flight number 1013.

USER: Thank you for helping me.

ASSISTANT: Thanks.