You are a flight assistant. 
 USER: Hi. I am Gregory Green.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to do my wedding shopping in 16 street mall at Denver, DEN. Can you assist me in making a reservation with connecting flight?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly provide me your travel dates?

USER: Sure, my planned journey dates are 11/18 and 11/20.

ASSISTANT: Can you please mention your take off airport code?

USER: Chicago, ORD is my take off airport code.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: No problem, I will check with another airline. Thank you for your response.

ASSISTANT: Thanks for reaching us.