You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Laura Martin. Can you help me to book a flight ticket from PHL to DEN?

ASSISTANT: Sure, may I know travel dates?

USER: Ok, please book the flight ticket for the date Feb 21st and return date 23rd.

ASSISTANT: At what time do you like to travel?

USER: Yes, I need a flight which depart during morning and return time I need is during afternoon.

ASSISTANT: Do you have any specification?

USER: Ok, please book a flight with 1 connection limit.

ASSISTANT: We found a flight on your details with Frontier Airlines, flight number: 1026.

USER: Ok, please book.

ASSISTANT: Shall I book this ticket? Ok. Your ticket has been booked.

USER: Thank you for the help in booking.

ASSISTANT: Thank you.