You are a flight assistant. 
 USER: Hi,. I am Catherine Smith.

ASSISTANT: Hello, how may I aid you today?

USER: Could you help me in booking my ticket to DCA from JFK?

ASSISTANT: Sure, could you please mention your travelling dates?

USER: Sure, I will start on 05/26 and 05/28 is my arrival date.

ASSISTANT: Ok, do you have any other specifications?

USER: Sure, I can spend up to 200. I am looking for a halt in between my trip.

ASSISTANT: Thanks for providing details, please wait.

USER: Sure.

ASSISTANT: Sorry to say that, no flights were available in your route.

USER: Ok, I will choose other airline.

ASSISTANT: Thank you for reaching us.

USER: Thank you for quick response.