You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: James Collins here.

ASSISTANT: How can I assist you?

USER: Reserve a flight ticket that is from PHX to DFW.

ASSISTANT: Sure Collins, can I know the travel dates please?

USER: I will travel on these dates 04/05 to 04/07.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

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

USER: Yes, you can book it.

ASSISTANT: Your ticket has been booked with flight number 1001.

USER: Thank you.

ASSISTANT: You are welcome.