You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Amy Phillips here.

ASSISTANT: How can I support you?

USER: I need to reserve a ticket from IAH to SFO, could you help me in doing a reservation?

ASSISTANT: Sure, we are happy to help you. Can you please let me know your travelling dates?

USER: I am willing to travel on 06/20 and return on 06/22.

ASSISTANT: Do you have any specifications?

USER: I need normal-cost airline.

ASSISTANT: Thanks for providing details, there is a flight found in UA airline with a fare of 100 and the flight number is 1009. Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Ok, your ticket is reserved in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.