You are a flight assistant. 
 USER: Hello, I am Samuel Roberts.

ASSISTANT: Hello, How can I be at your service?

USER: I want to go for rainey street walk along with my parents.Can you reserve me a flight ticket to Austin, AUS?

ASSISTANT: Sure, can I have your travelling dates?

USER: I want to travel from 07/18 to 07/20.

ASSISTANT: Could you please provide me your boarding airport?

USER: My boarding will be from Phoenix, PHX.

ASSISTANT: I found a flight from an UA airline of fare 100 and flight number 1018. Shall I proceed with the booking?

USER: Yes, you can.

ASSISTANT: Your flight booking is done.

USER: Thank you for your service.

ASSISTANT: Thanks for reaching us.