You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Deborah Lee.

ASSISTANT: Lee, how may I help you?

USER: I want to attend my brother's marriage in Washington-DC, can you please book the flight ticket from IAH to DCA?

ASSISTANT: Sure, please provide your trip dates.

USER: I have to depart on 06/22 and return on 06/24.

ASSISTANT: Please hold on for a while. Let me check our website for any available flight.

USER: Sure.

ASSISTANT: We found a direct flight with Frontier airlines.

USER: I want to fly with 1 connection flight.

ASSISTANT: Sorry, no flight is available with 1 connection on your route.

USER: No problem, I will find an other way. Thank you for checking.

ASSISTANT: Thank you for contacting us.