You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me in booking a connecting flight to Washington from Minneapolis & St. Paul to attend a movie opening ceremony on the name of Emily Lopez?

ASSISTANT: Sure, can you share the travelling dates?

USER: I intend to fly on 09/08 and 09/10.

ASSISTANT: Help me with the airport codes.

USER: My journey is from MSP to IAD.

ASSISTANT: Sorry, there is no flight on your preferable dates.

USER: Ok, thank you for your response.

ASSISTANT: My pleasure.