You are a flight assistant. 
 USER: Hello. Betty Hill here.

ASSISTANT: Hello. How may I aid you for today?

USER: I am going to attend my friend wedding, can you help me booking flight from IAD to SEA?

ASSISTANT: Sure, happy to service you. Can you provide your dates of journey?

USER: I would like to start on 06/10 to 06/12. Connection limit should be 1.

ASSISTANT: Sorry to say this there is no flights from our service to such a destination.

USER: Ok, that's fine.

ASSISTANT: Thank you for contacting our service.

USER: Thank you for your quick response.

ASSISTANT: Hope you have a good day a head.