You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Melissa Nelson here.

ASSISTANT: How can I assist you today?

USER: I want to visit the LBJ Presidential Library, which is located in Austin, hope you are helping me with booking.

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Sure, my journey dates are from 10/19 and 10/21.

ASSISTANT: Please provide your airport codes that you want to travel.

USER: Ok, my locations are from HOU to AUS.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: It's ok, thanks for your information.

ASSISTANT: Welcome, have a great day.