You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you help me in booking from MSP to IAD, as there is a team outing?

ASSISTANT: Sure, I am gleeful to help you. Could you please provide your travelling dates to search for the flight?

USER: My trip dates are Jul 30 to Aug 1.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight which return in evening.

ASSISTANT: May I know your name?

USER: I am David Lopez.

ASSISTANT: There is a connecting flight 1003 of Frontier airlines, can I proceed?

USER: You can reserve it.

ASSISTANT: Sorry to say, there is no flight at evening time on your return journey.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.