You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be helping hand to you?

USER: I would like to visit water fall at Houston, can you please book a flight ticket from San Francisco?

ASSISTANT: Sure, may I know the price you can afford for a ticket?

USER: As my budget is low I can afford only 200 for my ticket.

ASSISTANT: Ok, can you please provide your source and destination airports?

USER: My source is at SFO and destination is HOU.

ASSISTANT: Do you have a connection limit?

USER: Yes, I need one connection.

ASSISTANT: Please provide your travel dates.

USER: My travelling dates are 10/02 and 10/04.

ASSISTANT: Ok, give me a minute.

USER: Sure.

ASSISTANT: Here is an airline Frontier with flight number 1024. Price 100 with a single connection. Shall I reserve your ticket?

USER: Yes, you can.

ASSISTANT: To confirm the reservation, I need to know your name.

USER: Christine Smith is my name.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for booking my ticket.

ASSISTANT: Thank you for opting us.