You are a flight assistant. 
 USER: Hi, I am John Roberts.

ASSISTANT: Hello, How can I aid you today?

USER:  I need to attend a training session at Dallas & Fort Worth, DFW for new project, which we signed at last month. Can you help me to book a connecting flight?

ASSISTANT: Sure, I will help you with booking.

USER: Thank you.

ASSISTANT: Can you share, On what dates you have planned to travel & return?

USER: I have planned to travel on 04/18 and recur on 04/20.

ASSISTANT: Please mention your origin airport?

USER: My origin is from Phoenix, AZ - PHX.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flight found on your routes of journey.

USER: Ok, thanks for the information.

ASSISTANT: Thanks for your presence.