You are a flight assistant. 
 USER: Hello, Brandon Lee here.

ASSISTANT: Hello, how may I help you?

USER: I want to go on a business trip to Detroit.Can you please book a flight ticket for me?

ASSISTANT: Sure, may I know your airport codes?

USER: I would like to go from PHL to DTW.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 07/29 to 07/31.

ASSISTANT: Ok, wait for a minute.

USER: Make sure price should not exceed 1000 and with 1 connection only.

ASSISTANT: Yes, I found flight-1009 with UA airlines, can I proceed? Yes, your details were matched.

USER: Yes, please proceed.

ASSISTANT: Yes, your booking is confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us.