You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Thompson.

ASSISTANT: How may I render you today?

USER: I got an invitation from the president of Washington regarding a meeting at White House, so I want to book a flight ticket with single connection. Can you help me with that?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I have to go on 10/02 and return back on 10/04.

ASSISTANT: Kindly assign your airport codes?

USER: I am heading to IAD from MSP.

ASSISTANT: Thanks for your details, please wait for some time.

USER: Ok, I will wait for your response.

ASSISTANT: Thanks for waiting. Sorry, there are no flights found with your specifications.

USER: No issues, I will try another airline. Thank you.

ASSISTANT: Thank you for reaching us, have a good day.