You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Eric Walker here. I want to watch baseball game in Houston, could you book a ticket for me from DEN to HOU?

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

USER: My itinerary dates are 11/05 and 11/07.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

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

USER: Please book my ticket.

ASSISTANT: Your ticket has been booked with flight number 1004.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us.