You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emma Phillips.

ASSISTANT: How may I assist you?

USER: I am planning to visit Denver, can you please book me a ticket from LAX to DEN?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can you please share your planned journey dates?

USER: My preferable journey dates are from Mar 16 to Mar 18.

ASSISTANT: Do you have any class preference?

USER: No, I don't have any class preference for this trip.

ASSISTANT: Give me a minute, I will let you know the flight availability.

USER: Sure, take your own time.

ASSISTANT: Thank you for your time, there is a flight available with price 100 and single connection in UA airline having 1004 as flight number.

USER: Please book my ticket in this airlines.

ASSISTANT: Your reservation has been confirmed in economy class.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for approaching us.