You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am looking to book a flight ticket to my friend, his name is Justin Jackson. Will you help me with that?

ASSISTANT: Sure, I will help you. Will you please provide your dates of travelling?

USER: Sure, the travelling dates that he had planned are 05/10 and 05/12.

ASSISTANT: Will you please provide your regional airport codes?

USER: He wants to travel from PHX to ORD.

ASSISTANT: Please give me a moment to check the flight and I will get back to you. Thank you for waiting.

USER: Ok, please check the flight with connection limit 1 because he told me to confirm the flight with this requirement.

ASSISTANT: I am sorry Justin, I could not found any flights on your dates to your region. Is there any other dates that you are planning?

USER: It's ok, thank you for the information. No, thank's.

ASSISTANT: Thank you for your valuable time in reaching us. Have a great day.

USER: You are welcome.