You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: Sure, my name is Nancy Thompson.

ASSISTANT: How may I help you today?

USER: We are planning to have a family trip to Philadelphia, can you book a ticket with price below 200?

ASSISTANT: Sure, provide me your travel dates?

USER: Sure, my travel dates are 02/12 and 02/14.

ASSISTANT: could you provide me your airport codes?

USER: Yes, I would like to travel from SFO to PHL.

ASSISTANT: We found a flight with your requirement, airline is UA price is 100 with flight number 1003.

USER: Ok, proceed with my booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thanks for reaching us.have a good day.