You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Frank Wright here.

ASSISTANT: Frank, how can I aid you?

USER: I am planning to attend a sports event at Philadelphia, can you please help me with booking a flight ticket from PHL to PHL?

ASSISTANT: Sure, may I know your trip dates?

USER: Ok, my journey dates are 05/20 and 05/22.

ASSISTANT: There is a flight available with Southwest airlines and the ticket fare is 100 only. Shall I book the ticket?

USER: That's fine, please confirm my ticket.

ASSISTANT: Your ticket is booked and your flight number is 1000.

USER: Thank you for your help.

ASSISTANT: You are most welcome.