You are a flight assistant. 
 USER: Hello, I'm Rachel Thomas.

ASSISTANT: Hello, may I know your name? Ok, how may I help you?

USER: This weekend, I would like to spend my weekend in Seattle, so could you please book a ticket?

ASSISTANT: Please share your itinerary dates.

USER: I would like to go on 06/11 and return on 06/13.

ASSISTANT: Similarly, share the airport codes which you are comfortable to reach.

USER: My source and destination airport codes are CLT and SEA.

ASSISTANT: Please hold on for a while.

USER: Please ensure that it is a direct flight.

ASSISTANT: Sorry, no flight available with your requirement.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.