You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Gary Edwards. I am looking for a flight from PHL to DCA, can you help me in booking?

ASSISTANT: Sure, when are you willing to make your trip?

USER: My planned travel dates are Dec 05 and Dec 07.

ASSISTANT: Do you need a lay by?

USER: Yes, I am looking  for a connecting flight under 200 price.

ASSISTANT: Is there any class preference?

USER: No, I am not looking for any class preferences.

ASSISTANT: Ok, there is an UA airline with flight number 1020 going on your way and the tariff is 100. Is that okay?

USER: That's fine, please proceed in booking with this flight.

ASSISTANT: Your booking has been done.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.