You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your good name please?

USER: My name is Kathleen Johnson.

ASSISTANT: How can I serve you?

USER: I want to visit a place in Philadelphia, can you please make a reservation?

ASSISTANT: Sure, Kindly provide with airport codes?

USER: Ok, my travelling codes are from DC-DCA to PA-PHL.

ASSISTANT: Let me know your travelling dates?

USER: The dates are from 07/18 to 07/20, make sure with the price 200 with 1 connection.

ASSISTANT: Sorry to inform, we have no flights right now based on your information.

USER: Ok, no issue.

ASSISTANT: Thanks for contacting us.

USER: Thank you for the information.

ASSISTANT: Have a nice day.