You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: My wish is to have a look at Houston hop-on hop-off sightseeing tour on 04/24.

ASSISTANT: Ok.

USER: For this I want to book a ticket with 1 connection. Can you help me in this?

ASSISTANT: Sure, I am mirthful to help you.

USER: Ok.

ASSISTANT: Could you please provide your boarding and landing point airport codes?

USER: Source code: DCA. Destination code: IAH.

ASSISTANT: Do you have price limit?

USER: My price limit is 1000.

ASSISTANT: Please share your return date of journey to proceed further.

USER: The return date is 04/26.

ASSISTANT: Please wait for a moment, I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: I am glad to say that, there is a flight available with UA airline, flight number 1024 with fare 100 and 1 connection.

USER: Ok, confirm my ticket with the name of Catherine Phillips.

ASSISTANT: Your flight has been reserved successfully.

USER: Thank you for helping me in booking a ticket.

ASSISTANT: Thank you for opting us.