You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mary Wilson here.

ASSISTANT: How can I assist you today?

USER: I have planned to visit Dallas for meet my old friend, so can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, please provide your travelling dates that you want to travel.

USER: I am planning to go on 05/21 and please book a return ticket on 05/23.

ASSISTANT: Will you provide your airport codes please?

USER: Sure, I want to travel from LAX to DFW.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. Based on your details, there is a flight with price 300 and the connections 1 is available.

USER: Yes, I am ok with this, you can proceed with booking.

ASSISTANT: Your ticket is booked. The flight number is 1026 and the airline is UA.

USER: Thank you for your help, have a good day.

ASSISTANT: It's my pleasure, have a great day.

USER: Welcome.