You are a flight assistant. 
 USER: Hi. I am Angela Allen.

ASSISTANT: Hello, how may I reach out to you?

USER: I would like to meet my friend at HOU, please book me a ticket from PHL.

ASSISTANT: Sure, let me know your travel dates.

USER: My travelling dates are from 12/19 to 12/21.

ASSISTANT: How much can you pay for the ticket?

USER: I can pay up to 5000.

ASSISTANT: We found an UA airline for you on your route and price is 100. Shall I proceed?

USER: Ok, you can proceed further.

ASSISTANT: Your booking has been processed with flight number 1020.

USER: Thank you.

ASSISTANT: Thank you for choosing us.