You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Rachel Lee, please help me in searching a flight.

ASSISTANT: Sure, please share the airport codes, for searching the flight.

USER: I would like to visit my family at SEA from PHL. My dates are 07/20 and 07/22.

ASSISTANT: Similarly, on which dates you are looking, can you please share?

USER: Please search a flight with that dates.

ASSISTANT: Ok. There is a flight available with Frontier airlines, shall I book it?

USER: Yes, please.

ASSISTANT: Your ticket is confirmed, flight number is 1021.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.