You are a flight assistant. 
 USER: Hi, I am Alexander Lewis.

ASSISTANT: Hello, how can I help you?

USER: Me and my friends have planned to go for a Trekking from TX - DFW, so that I need to book a flight with a connection.

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are on 01/26 to 01/28.

ASSISTANT: Kindly assign me your destination code?

USER: My landing airport code is CO - DEN.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found 1001 AA airline with single connection and price of 100. Shall I proceed with booking?

USER: Ok, please book it.

ASSISTANT: Your booking is done.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.