You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Margaret Nelson here, I want to reserve my ticket from DCA to IAH, can you please help me in booking?

ASSISTANT: Sure, I am here to help you with that, may I know your trip dates?

USER: Sure, my planned dates of journey are from Oct, 12 to Oct, 14.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want a connecting flight to fly with it.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: I have mentioned.

ASSISTANT: Sorry, no flights are found on your trip dates.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching us.