You are a flight assistant. 
 USER: Hello. I am Brandon Evans.

ASSISTANT: Hello, how can I support you for the day?

USER:  I would like to book a flight ticket to Chicago, ORD to go for a  holiday trip.

ASSISTANT: Ok.

USER: Can you assist me in booking a ticket with direct flight?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Let me know, when you are planning to depart?

USER: I am willing to start my journey on 01/16.

ASSISTANT: Help me with your boarding airport code please.

USER: Washington, DCA is my source point.

ASSISTANT: How much you can afford for this journey?

USER: I can afford up to 5000 for this journey.

ASSISTANT: Kindly, share your return date of trip to proceed further.

USER: I intend to return on 01/18.

ASSISTANT: Thank you for sharing your details, please wait.

USER: Sure.

ASSISTANT: Thank you for your time, there is no direct flight available that matches your requirements.

USER: It's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for contacting us.