You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Anna Scott here.

ASSISTANT: How may I guide you?

USER: Can you help me out in ticket booking?

ASSISTANT: Sure, I will help you in ticket booking.

USER: I want to go New York for my holiday vacation from IAD.

ASSISTANT: Ok, may I know your destination airport code?

USER: My destination code is LGA.

ASSISTANT: On which dates you want to travel?

USER: I want to travel on 10/04 and return on 10/06.

ASSISTANT: Ok, give me a moment.

USER: Ok.

ASSISTANT: As per your planning dates, UA airline is providing with 0 connection. Shall I proceed for booking with UA airline?

USER: Please can you check for 1 connection?

ASSISTANT: Sorry Scott, there is no flight with single connection. Sorry for inconvenience.

USER: It's ok. Thank you for your valuable time.

ASSISTANT: Thank you for choosing us.