You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Robert Thomas.

ASSISTANT: Nice to meet you Thomas.

USER: I am planning to meet my friends in DFW. I want you to book a ticket from PHX.

ASSISTANT: Ok, may I know your travelling dates please?

USER: My planning dates are from 04/23 to 04/25.

ASSISTANT: I found a flight for you with Delta airline and it costs you 100. Shall I proceed?

USER: That's good to hear. Please proceed.

ASSISTANT: Your ticket has been booked with 1005 flight number. Have a great fun with your friends.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us. Have a safe flight.