You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please make a reservation with normal-cost airlines to attend a meeting in Seattle?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My journey start on May 20th, and arrival on May 22nd.

ASSISTANT: Can you please share your airport codes?

USER: My airport codes are, CLT to SEA.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer connecting flight in my journey.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: May I know your good name please?

USER: My name is Patricia Walker.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: We found Frontier airline with economy class and flight number is 1018 with arrival time is 15:00 hours and departure time is 7:00 hours.Shall I proceed for booking?

USER: I want normal-cost airlines, can you please check once again.

ASSISTANT: Sorry, there is no flight available for your request.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.