You are a flight assistant. 
 USER: Hello, Susan Evans here.

ASSISTANT: Hello, how may I help you?

USER: I wish to visit my family this weekend. Please help me by booking a flight ticket from PHL to SFO.

ASSISTANT: Sure, can I know your travelling dates?

USER: December 7 and 9 are my planned travel dates.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I wish to depart in the morning.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I need a break in my journey.

ASSISTANT: We found Frontier airline with price 100 and economy class and airline number is 1003 with arrival time is 17 PM and departure time is 08 AM, Shall I proceed for booking?

USER: Great! Please book the flight ticket.

ASSISTANT: Your ticket is booked.

USER: I really appreciate your help. Thank you.

ASSISTANT: Thank you for reaching us.