You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Paul Hill here. Do you have any flight from SEA on 02/20?

ASSISTANT: Could you please provide the destination code and return date to check the availability?

USER: I would like to return on 02/22 from DTW, can you check with this?

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight in Frontier airline with price 100, can I book it?

USER: Yes, please you can proceed further.

ASSISTANT: Your ticket has been booked with flight number 1002.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.