You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Margaret Johnson.

ASSISTANT: How may I help you?

USER: I would like to visit the Mercer Arboretum and Botanic Gardens at Houston, IAH. Can you please help me in booking a flight ticket?

ASSISTANT: Please let me know your boarding airport code.

USER: My boarding point is Austin, AUS.

ASSISTANT: Can I know your travel dates?

USER: My travel dates are 06/13 and 06/15.

ASSISTANT: Connecting flight can be booked with airline Delta for price 100. Shall I book a ticket?

USER: Yes, please confirm my ticket.

ASSISTANT: Ticket is booked having flight number 1017.

USER: Thank you for booking my ticket.

ASSISTANT: Thanks.